Debt (Details) (USD $)	3 Months Ended					6 Months Ended		1 Months Ended	3 Months Ended
	Mar. 01, 2013	May 31, 2013	Nov. 30, 2012		Mar. 02, 2012	May 31, 2013 From [Member]	May 31, 2013 To [Member]	Feb. 28, 2010 Notes 2015 and 2020 [Member]	Mar. 01, 2013 Notes 2015 and 2020 [Member]	May 31, 2013 Notes 2015 and 2020 [Member]	Feb. 28, 2010 Notes 2015 [Member]	Feb. 28, 2010 Notes 2020 [Member]	Mar. 02, 2012 Scenario i [Member] Line of Credit [Member] From [Member]	Mar. 02, 2012 Scenario i [Member] Line of Credit [Member] To [Member]	Mar. 02, 2012 Scenario ii [Member] Line of Credit [Member]	Mar. 02, 2012 Scenario ii [Member] Line of Credit [Member] From [Member]	Mar. 02, 2012 Scenario ii [Member] Line of Credit [Member] To [Member]
Debt Instrument [Line Items]
Senior notes, issued											$ 600,000,000	$ 900,000,000
Senior notes, interest rate											3.25%	4.75%
Proceeds from isssuance of senior notes								1,500,000,000
Issuance discount								6,600,000
Issuance cost								10,700,000
Effective Interest rate											3.45%	4.92%
Interest Paid									31,100,000
Fair value of the Notes										1,600,000,000
Repurchase notes at price of their principal amount, plus accrued and unpaid interest								101.00%
Line of Credit Facility [Abstract]
Total senior unsecured revolving credit facility					1,000,000,000
Option to request additional commitments on credit facility					500,000,000
Maximum aggregate, credit facility					1,500,000,000
Debt Instrument, Basis Spread on Variable Rate													0.795%	1.30%
Margin Added to LIBOR in Determining Interest Rate																0.00%	0.30%
Percentage Added to Federal Funds Effective Rate in Determining Interest Rate															0.50%
Percentage Added to LIBOR in Determining Interest Rate															1.00%
Line of Credit Facility, Commitment Fee Percentage						0.08%	0.20%
Line of Credit Facility, Extension Period	1 year
Line of Credit Facility, Amount Outstanding		0
Capital Lease Obligations [Abstract]
Capital Lease Obligations Incurred	25,700,000
Sale Leaseback Agreement, Leaseback Period	24 months
Capital lease obligations		29,984,000
Captial lease obligations, current		$ 20,083,000	$ 11,217,000	[1]

[1] The Condensed Consolidated Balance Sheet as of November 30, 2012 has been derived from the audited Consolidated Financial Statements at that date but does not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements.