-Network: (11 - Statement - Statement Of Income Alternative)

-Income Statement [Abstract] {ID1}

-Statement [Table] {ID2}

-Statement [Line Items] {ID3}

Sales (K) {ID4}

Cost of goods sold (exclusive of expenses below) {ID5}

Selling, general administrative, and other expenses {ID6}

Research and development expenses {ID7}

Provision for depreciation, depletion, and amortization {ID8}

Restructuring and other charges (D) {ID9}

Interest expense {ID10}

Other income, net (J) {ID11}

Total costs and expenses {ID12}

(Loss) income from continuing operations before income taxes {ID13}

(Benefit) provision for income taxes (N) {ID14}

(Loss) income from continuing operations {ID15}

Loss from discontinued operations (C) {ID16}

Net (loss) income {ID17}

Less: Net (loss) income attributable to noncontrolling interests {ID18}

Net (loss) income {ID19}

-AMOUNTS ATTRIBUTABLE TO ALCOA COMMON SHAREHOLDERS: {ID20}

(Loss) income from continuing operations {ID21}

Loss from discontinued operations {ID22}

Net (loss) income {ID23}

-EARNINGS PER SHARE ATTRIBUTABLE TO ALCOA COMMON SHAREHOLDERS (M): {ID24}

-Basic: {ID25}

(Loss) income from continuing operations {ID26}

Loss from discontinued operations {ID27}

Net (loss) income {ID28}

-Diluted: {ID29}

(Loss) income from continuing operations {ID30}

Loss from discontinued operations {ID31}

Net (loss) income {ID32}

Dividends paid per common share {ID33}

-Network: (12 - Statement - Statement Of Financial Position Classified)

-Statement of Financial Position [Abstract] {ID34}

-Statement [Table] {ID35}

-Statement [Line Items] {ID36}

-ASSETS {ID37}

-Current assets: {ID38}

Cash and cash equivalents {ID39}

Receivables from customers, less allowances of $72 in 2009 and $65 in 2008 {ID40}

Other receivables {ID41}

Inventories (F) {ID42}

Fair value of hedged aluminum {ID43}

Prepaid expenses and other current assets {ID44}

Total current assets {ID45}

Properties, plants, and equipment {ID46}

Less: accumulated depreciation, depletion, and amortization {ID47}

Properties, plants, and equipment, net {ID48}

Goodwill {ID49}

Investments (E and G) {ID50}

Deferred income taxes {ID51}

Other assets {ID52}

Assets held for sale (C) {ID53}

Total assets {ID54}

-LIABILITIES {ID55}

-Current liabilities: {ID56}

Short-term borrowings (H) {ID57}

Commercial paper {ID58}

Accounts payable, trade {ID59}

Accrued compensation and retirement costs {ID60}

Taxes, including income taxes {ID61}

Fair value of derivative contracts (P) {ID62}

Other current liabilities {ID63}

Long-term debt due within one year {ID64}

Total current liabilities {ID65}

Long-term debt, less amount due within one year (H) {ID66}

Accrued pension benefits {ID67}

Accrued postretirement benefits {ID68}

Other noncurrent liabilities and deferred credits {ID69}

Deferred income taxes {ID70}

Liabilities of operations held for sale (C) {ID71}

Total liabilities {ID72}

COMMITMENTS AND CONTINGENCIES (I) {ID73}

-EQUITY {ID74}

-Alcoa shareholders' equity: {ID75}

Preferred stock {ID76}

Common stock (L) {ID77}

Additional capital (L) {ID78}

Retained earnings {ID79}

Treasury stock, at cost {ID80}

Accumulated other comprehensive loss {ID81}

Total Alcoa shareholders' equity {ID82}

Noncontrolling interests {ID83}

Total equity {ID84}

Total liabilities and equity {ID85}

-Network: (13 - Statement - Statement Of Financial Position Classified (Parenthetical))

-Statement of Financial Position [Abstract] {ID86}

-Statement [Table] {ID87}

-Statement [Line Items] {ID88}

Receivables from customers, allowances {ID89}

-Network: (14 - Statement - Statement Of Cash Flows Indirect)

-Statement of Cash Flows [Abstract] {ID90}

-Statement [Table] {ID91}

-Statement [Line Items] {ID92}

-CASH FROM OPERATIONS {ID93}

Net (loss) income {ID94}

-Adjustments to reconcile net (loss) income to cash from operations: {ID95}

Depreciation, depletion, and amortization {ID96}

Deferred income taxes {ID97}

Equity loss (income), net of dividends {ID98}

Restructuring and other charges (D) {ID99}

Gains from investing activities - asset sales (J) {ID100}

Provision for doubtful accounts {ID101}

Loss from discontinued operations (C) {ID102}

Stock-based compensation {ID103}

Excess tax benefits from stock-based payment arrangements {ID104}

Other {ID105}

-Changes in assets and liabilities, excluding effects of acquisitions, divestitures, and foreign currency translation adjustments: {ID106}

Decrease (increase) in receivables {ID107}

Decrease (increase) in inventories {ID108}

Decrease (increase) in prepaid expenses and other current assets {ID109}

(Decrease) increase in accounts payable, trade {ID110}

(Decrease) in accrued expenses {ID111}

(Decrease) increase in taxes, including income taxes {ID112}

Pension contributions {ID113}

(Increase) in noncurrent assets {ID114}

Increase in noncurrent liabilities {ID115}

Decrease (increase) in net assets held for sale (C) {ID116}

CASH PROVIDED FROM CONTINUING OPERATIONS {ID117}

CASH USED FOR DISCONTINUED OPERATIONS {ID118}

CASH PROVIDED FROM OPERATIONS {ID119}

-FINANCING ACTIVITIES {ID120}

Net change in short-term borrowings (H) {ID121}

Net change in commercial paper {ID122}

Additions to long-term debt (H) {ID123}

Debt issuance costs (H) {ID124}

Payments on long-term debt {ID125}

Proceeds from exercise of employee stock options {ID126}

Excess tax benefits from stock-based payment arrangements {ID127}

Issuance of common stock (L) {ID128}

Repurchase of common stock {ID129}

Dividends paid to shareholders {ID130}

Dividends paid to noncontrolling interests {ID131}

Contributions from noncontrolling interests {ID132}

CASH PROVIDED FROM FINANCING ACTIVITIES {ID133}

-INVESTING ACTIVITIES {ID134}

Capital expenditures {ID135}

Capital expenditures of discontinued operations {ID136}

Acquisitions, net of cash acquired (E) {ID137}

Acquisitions of noncontrolling interests {ID138}

Proceeds from the sale of assets and businesses (E) {ID139}

Additions to investments (I) {ID140}

Sales of investments (G) {ID141}

Net change in short-term investments and restricted cash {ID142}

Other {ID143}

CASH USED FOR INVESTING ACTIVITIES {ID144}

EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS {ID145}

Net change in cash and cash equivalents {ID146}

Cash and cash equivalents at beginning of year {ID147}

CASH AND CASH EQUIVALENTS AT END OF PERIOD {ID148}

-Network: (15 - Statement - Statement Of Shareholders Equity And Other Comprehensive Income)

-Statement of Stockholders' Equity [Abstract] {ID149}

-Statement [Table] {ID150}

-Statement, Equity Components [Axis] {ID151}

-Equity Component [Domain] {ID152}

Preferred stock {ID153}

Common stock {ID154}

Additional capital {ID155}

Retained earnings {ID156}

Treasury stock {ID157}

Accumulated other comprehensive (loss) income {ID158}

Non-controlling interests {ID159}

-Statement [Line Items] {ID160}

Beginning Balance {ID161}

Net (loss) income {ID162}

Other comprehensive income {ID163}

-Cash dividends: {ID164}

Preferred @ $1.875 in 2009 and $1.875 in 2008 per share {ID165}

Adjustment to common dividends declared {ID166}

Common @ $0.20 in 2009 and $0.34 in 2008 per share {ID167}

Noncontrolling interests {ID168}

Beneficial conversion option on convertible notes (H) {ID169}

Stock-based compensation {ID170}

Common stock issued: compensation plans {ID171}

Issuance of common stock (L) {ID172}

Repurchase of common stock {ID173}

Contributions {ID174}

Purchase of equity from noncontrolling interest {ID175}

Other {ID176}

Ending Balance {ID177}

-Network: (16 - Statement - Statement Of Shareholders Equity And Other Comprehensive Income (Parenthetical))

-Statement of Stockholders' Equity [Abstract] {ID178}

-Statement [Table] {ID179}

-Statement, Equity Components [Axis] {ID180}

-Equity Component [Domain] {ID181}

Preferred stock {ID182}

Common stock {ID183}

Additional capital {ID184}

Retained earnings {ID185}

Treasury stock {ID186}

Accumulated other comprehensive (loss) income {ID187}

Non-controlling interests {ID188}

-Statement [Line Items] {ID189}

Preferred, per share {ID190}

Common, per share {ID191}

-Network: (17 - Statement - Statement Of Other Comprehensive Income)

-Statement of Income and Comprehensive Income [Abstract] {ID192}

-Statement [Table] {ID193}

-Statement [Line Items] {ID194}

Net (loss) income {ID195}

-Other comprehensive income, net of tax: {ID196}

Change in unrecognized losses and prior service cost related to pension and postretirement benefit plans {ID197}

Foreign currency translation adjustments {ID198}

-Unrealized gains on available-for-sale securities: {ID199}

Unrealized holding gains {ID200}

Net amount reclassified to income {ID201}

Net change in unrealized gains on available-for-sale securities {ID202}

-Unrecognized (losses) gains on derivatives (P): {ID203}

Net change from periodic revaluations {ID204}

Net amount reclassified to income {ID205}

Net unrecognized (losses) gains on derivatives {ID206}

Total Other comprehensive income, net of tax {ID207}

Comprehensive income {ID208}

Net (loss) income {ID209}

-Other comprehensive income, net of tax: {ID210}

Change in unrecognized losses and prior service cost related to pension and postretirement benefit plans {ID211}

Foreign currency translation adjustments {ID212}

-Unrealized gains on available-for-sale securities: {ID213}

Unrealized holding gains {ID214}

Net amount reclassified to income {ID215}

Net change in unrealized gains on available-for-sale securities {ID216}

-Unrecognized (losses) gains on derivatives (P): {ID217}

Net change from periodic revaluations {ID218}

Net amount reclassified to income {ID219}

Net unrecognized (losses) gains on derivatives {ID220}

Total Other comprehensive income, net of tax {ID221}

Comprehensive income {ID222}

Net (loss) income {ID223}

-Other comprehensive income, net of tax: {ID224}

Change in unrecognized losses and prior service cost related to pension and postretirement benefit plans {ID225}

Foreign currency translation adjustments {ID226}

-Unrealized gains on available-for-sale securities: {ID227}

Unrealized holding gains {ID228}

Net amount reclassified to income {ID229}

Net change in unrealized gains on available-for-sale securities {ID230}

-Unrecognized (losses) gains on derivatives (P): {ID231}

Net change from periodic revaluations {ID232}

Net amount reclassified to income {ID233}

Net unrecognized (losses) gains on derivatives {ID234}

Total Other comprehensive income, net of tax {ID235}

Comprehensive income {ID236}

-Network: (19 - Disclosure - Notes to Financial Statements)

-Notes to Financial Statements [Abstract] {ID237}

A. Basis of Presentation {ID238}

B. Recently Adopted and Recently Issued Accounting Standards {ID239}

C. Discontinued Operations and Assets Held for Sale {ID240}

D. Restructuring and Other Charges {ID241}

E. Acquisitions and Divestitures {ID242}

F. Inventories {ID243}

G. Investments {ID244}

H. Debt {ID245}

I. Commitments and Contingencies {ID246}

J. Other Income, Net {ID247}

K. Segment Information {ID248}

L. Preferred and Common Stock {ID249}

M. Earnings Per Share {ID250}

N. Income Taxes {ID251}

O. Pension Plans and Other Postretirement Benefits {ID252}

P. Derivatives and Other Financial Instruments {ID253}

Q. Subsequent Events {ID254}

-Network: (20 - Disclosure - Document Information)

-Document Information [Text Block] {ID255}

Document Type {ID256}

Amendment Flag {ID257}

Amendment Description {ID258}

Document Period End Date {ID259}

-Network: (21 - Disclosure - Entity Information)

-Entity [Text Block] {ID260}

Trading Symbol {ID261}

Entity Registrant Name {ID262}

Entity Central Index Key {ID263}

Current Fiscal Year End Date {ID264}

Entity Well-known Seasoned Issuer {ID265}

Entity Current Reporting Status {ID266}

Entity Voluntary Filers {ID267}

Entity Filer Category {ID268}

Entity Common Stock, Shares Outstanding {ID269}

Entity Public Float {ID270}

ALCOA INC XBRL Taxonomy Presentation Networks