Pension and Other Postretirement Plans (Fair Value of Pension Plans Assets) (Details) - Pension Plan [Member] - USD ($) $ in Thousands	Dec. 03, 2016	Nov. 28, 2015	Nov. 29, 2014
Fair Value Disclosures [Abstract]
Fair value of plan assets	$ 162,231	$ 164,488	$ 172,280
Total		164,208
Other items to reconcile to fair value of plan assets		280
Level 1 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	162,231	164,208
Level 2 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	0	0
Level 3 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	0	0
U.S. equity securities funds [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	37,600	45,744
U.S. equity securities funds [Member] | Level 1 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	37,600	45,744
U.S. equity securities funds [Member] | Level 2 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	0	0
U.S. equity securities funds [Member] | Level 3 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	0	0
Non-U.S. equity securities funds [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	30,055	20,466
Non-U.S. equity securities funds [Member] | Level 1 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	30,055	20,466
Non-U.S. equity securities funds [Member] | Level 2 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	0	0
Non-U.S. equity securities funds [Member] | Level 3 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	0	0
Fixed income securities funds [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	93,949	97,373
Fixed income securities funds [Member] | Level 1 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	93,949	97,373
Fixed income securities funds [Member] | Level 2 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	0	0
Fixed income securities funds [Member] | Level 3 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	0	0
Cash and equivalents [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	627	625
Cash and equivalents [Member] | Level 1 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	627	625
Cash and equivalents [Member] | Level 2 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	0	0
Cash and equivalents [Member] | Level 3 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	$ 0	$ 0