Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				12 Months Ended
	Dec. 01, 2012	Sep. 01, 2012	Jun. 02, 2012	Mar. 03, 2012	Nov. 30, 2013	Dec. 01, 2012	Dec. 03, 2011
Fair Value Of Assets And Liabilities Measured On A Nonrecurring Basis [Line Items]
Asset impairment charges	$ 846	$ 0	$ 671	$ 0	$ 0	$ 1,517	$ 332
Assets
Marketable securities	15,499				28,786	15,499
Derivative assets	830				533	830
Interest rate swaps	9,473				5,930	9,473
Cash-flow hedges	1,610					1,610
Liabilities [Abstract]
Derivative liabilities	956				1,399	956
Cash-flow hedges					4,801
Contingent consideration liability, continuing operations	1,649				566	1,649
Contingent consideration liability, discontinued operations	5,000				5,000	5,000
Fair Value Inputs Level 1 [Member]
Assets
Marketable securities	15,499				28,786	15,499
Derivative assets	0				0	0
Interest rate swaps	0				0	0
Cash-flow hedges	0					0
Liabilities [Abstract]
Derivative liabilities	0				0	0
Cash-flow hedges					0
Contingent consideration liability, continuing operations	0				0	0
Contingent consideration liability, discontinued operations	0				0	0
Fair Value Inputs Level 2 [Member]
Assets
Marketable securities	0				0	0
Derivative assets	830				533	830
Interest rate swaps	9,473				5,930	9,473
Cash-flow hedges	1,610					1,610
Liabilities [Abstract]
Derivative liabilities	956				1,399	956
Cash-flow hedges					4,801
Contingent consideration liability, continuing operations	0				0	0
Contingent consideration liability, discontinued operations	0				0	0
Fair Value Inputs Level 3 [Member]
Assets
Marketable securities	0				0	0
Derivative assets	0				0	0
Interest rate swaps	0				0	0
Cash-flow hedges	0					0
Liabilities [Abstract]
Derivative liabilities	0				0	0
Cash-flow hedges					0
Contingent consideration liability, continuing operations	1,649				566	1,649
Contingent consideration liability, discontinued operations	5,000				5,000	5,000
Cost Basis Investments Fair Value [Member]
Fair Value Of Assets And Liabilities Measured On A Nonrecurring Basis [Line Items]
Asset impairment charges						$ 1,517