Debt (Details) (USD $)	1 Months Ended				3 Months Ended		1 Months Ended	3 Months Ended
	Jun. 30, 2010	Mar. 02, 2012	Dec. 02, 2011		Mar. 02, 2012 From [Member]	Mar. 02, 2012 To [Member]	Feb. 28, 2010 Notes 2015 and 2020 [Member]	Mar. 02, 2012 Notes 2015 and 2020 [Member]	Feb. 28, 2010 Notes 2015 [Member]	Feb. 28, 2010 Notes 2020 [Member]	Mar. 02, 2012 Line of Credit [Member] Scenario(ii) [Member]	Mar. 02, 2012 Line of Credit [Member] From [Member] Scenario(i) [Member]	Mar. 02, 2012 Line of Credit [Member] From [Member] Scenario(ii) [Member]	Mar. 02, 2012 Line of Credit [Member] To [Member] Scenario(i) [Member]	Mar. 02, 2012 Line of Credit [Member] To [Member] Scenario(ii) [Member]
Debt [Abstract]
Capital lease obligations	$ 32,200,000	$ 17,400,000
Captial lease obligations, current		9,318,000	9,212,000	[1]
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, Amount Outstanding		$ 0
Sale Leaseback Agreement, Leaseback Period	43 months

[1] The Condensed Consolidated Balance Sheet as of December 2, 2011 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.