Pension and Other Postretirement Plans (Fair Value of Pension Plans Assets) (Details) - Pension Plan [Member] - USD ($) $ in Thousands	Nov. 28, 2015	Nov. 29, 2014	Nov. 30, 2013
Fair Value Disclosures [Abstract]
Total	$ 164,208	$ 171,991
Other items to reconcile to fair value of plan assets	280	289
Fair value of plan assets	164,488	172,280	$ 156,384
Level 1 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	164,208	171,991
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	45,744	47,181
U.S. equity securities funds [Member] | Level 1 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	45,744	47,181
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	20,466	21,546
Non-U.S. equity securities funds [Member] | Level 1 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	20,466	21,546
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	97,373	102,561
Fixed income securities funds [Member] | Level 1 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	97,373	102,561
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	625	703
Cash and equivalents [Member] | Level 1 [Member]
Fair Value Disclosures [Abstract]
Fair value of plan assets	625	703
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