Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0000029644 (http://www.sec.gov/CIK)

Debt Instrument [Line Items]	Period [Axis]
	2015-08-01 - 2016-07-31																												2016-07-22	2015-07-31
	Debt Instrument [Axis]																												Debt Instrument [Axis]	Debt Instrument [Axis]
	Five Point Four Eight Percent Unsecured Senior Notes Due June One Two Thousand Seventeen			Five Point Four Eight Percent Unsecured Senior Notes Due September Twenty Eight Two Thousand Seventeen			Five Point Four Eight Percent Unsecured Senior Notes Due November Thirty Two Thousand Seventeen			Three Point Seven Two Percent Unsecured Senior Notes Due March Twenty Seven Two Thousand Twenty Four			Unsecured Senior Notes Five			Unsecured Senior Notes Six			Variable Rate Guaranteed Senior Note Due May Nineteen Two Thousand Nineteen [Member]				Variable Rate Guaranteed Senior Note Due July Twenty Second Two Thousand Twenty One [Member]			Capitalized Lease Obligations And Other With Various Maturity Dates And Interest Rates	Terminated Interest Rate Swap Contract	Debt Instrument, Name	Variable Rate Guaranteed Senior Note Due July Twenty Second Two Thousand Twenty One [Member]	Five Point Four Eight Percent Unsecured Senior Notes Due June One Two Thousand Seventeen		Five Point Four Eight Percent Unsecured Senior Notes Due September Twenty Eight Two Thousand Seventeen		Five Point Four Eight Percent Unsecured Senior Notes Due November Thirty Two Thousand Seventeen		Three Point Seven Two Percent Unsecured Senior Notes Due March Twenty Seven Two Thousand Twenty Four		Unsecured Senior Notes Five		Unsecured Senior Notes Six		Variable Rate Guaranteed Senior Note Due May Nineteen Two Thousand Nineteen [Member]		Capitalized Lease Obligations And Other With Various Maturity Dates And Interest Rates	Terminated Interest Rate Swap Contract	Debt Instrument, Name
	Unit			Unit			Unit			Unit			Unit			Unit			Unit				Unit			Unit	Unit	Unit	Unit	Unit		Unit		Unit		Unit		Unit		Unit		Unit		Unit	Unit	Unit
		USD	Pure		USD	Pure		USD	Pure		USD	Pure		USD	Pure		USD	Pure		JPY	USD	Pure		JPY	Pure	USD	USD	USD	JPY	USD	Pure	USD	Pure	USD	Pure	USD	Pure	USD	Pure	USD	Pure	USD	Pure	USD	USD	USD
Long-term Debt		50,000,000			25,000,000			25,000,000			125,000,000			25,000,000			125,000,000				16,000,000					1,900,000	400,000	403,000,000		50,000,000		25,000,000		25,000,000		125,000,000		25,000,000		125,000,000		13,300,000		1,900,000	800,000	391,000,000
Debt Instrument, Maturity Date	2017-06-01			2017-09-28			2017-11-30			2024-03-27			2025-04-16			2030-06-17			2019-05-19				2021-07-15
Debt Instrument, Interest Rate, Stated Percentage			0.0548			0.0548			0.0548			0.0372			0.0293			0.0318				0.0041			0.0025						0.0548		0.0548		0.0548		0.0372		0.0293		0.0318		0.0041
Debt Instrument, Face Amount														25,000,000			125,000,000							9,700,000					1,000,000,000
Debt Instrument, Periodic Payment, Principal		50,000,000			25,000,000			25,000,000			125,000,000			25,000,000			125,000,000			1,650,000,000				1,000,000,000
Long-term Debt, Current Maturities																												(51,200,000)																		(1,800,000)
Long-term debt																												351,800,000																		389,200,000