Property, Plant and Equipment

Entity Registrant Name NORTHROP GRUMMAN CORP /DE/
CIK 0001133421
Accession number 0001133421-14-000006
Link to XBRL instance http://www.sec.gov/Archives/edgar/data/1133421/000113342114000006/noc-20131231.xml
Fiscal year end --12-31
Fiscal year focus 2013
Fiscal period focus FY
Current balance sheet date 2013-12-31
Current year-to-date income statement start date 2013-01-01
Commentary All information interpreted as expected.
Level 3 (Disclosure) Text Block concept us-gaap:PropertyPlantAndEquipmentTextBlock
Major classes of property, plant and equipment and their useful lives are as follows:
 
 
 
 
December 31
Useful life in years, $ in millions
 
Useful Life
 
2013
 
2012
Land and land improvements
 
   Up to 40(1)
 

$ 373

 

$ 373

Buildings and improvements
 
Up to 45
 
1,450

 
1,421

Machinery and other equipment
 
Up to 20
 
4,243

 
4,233

Capitalized software costs
 
3-5
 
418

 
413

Leasehold improvements
 
Length of Lease(1)
 
659

 
593

Property, plant and equipment, at cost
 
 
 
7,143

 
7,033

Accumulated depreciation
 
 
 
(4,337
)
 
(4,146
)
Property, plant and equipment, net
 
 
 

$2,806

 

$2,887


(1)
Land is not a depreciable asset. Leasehold improvements are depreciated over the useful life of the asset if it is shorter than the length of the lease.

Level 4 Details Key Concepts: Long-term Debt Maturities

Description Fact value US GAAP XBRL Concept
PPE, Gross 7,143,000,000 us-gaap:PropertyPlantAndEquipmentGross
Accumulated depreciation 4,337,000,000 us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
PPE, Net 2,806,000,000 us-gaap:PropertyPlantAndEquipmentNet
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