Employee Benefit Plans - benefit obligations in excess of fair value of plan assets (Details) - USD ($) $ in Thousands		12 Months Ended
		Nov. 29, 2015	Nov. 30, 2014	Nov. 24, 2013
Pension plans, defined benefit [Member]
Change in benefit obligation [Roll Forward]
Benefit obligation at beginning of year		$ 1,289,337	$ 1,233,799
Service cost		8,352	8,397	$ 8,707
Interest cost		47,179	54,958	51,984
Plan participants' contribution		534	700
Actuarial loss (gain)	[1]	(56,352)	166,664
Net curtailment loss		300	2,093
Impact of foreign currency changes		(21,306)	(12,532)
Plan settlements	[2]	(4,145)	(102,021)
Special termination benefits		0	35
Net benefits paid	[3]	(69,534)	(62,756)
Benefit obligation at end of year		1,194,365	1,289,337	1,233,799
Change in plan assets [Roll Forward]
Fair value of plan assets at beginning of year		878,823	903,033
Actual return on plan assets		10,185	128,281
Employer contribution		36,151	20,046
Plan participants' contributions		(534)	(700)
Plan settlements	[2]	(4,145)	(102,021)
Impact of foreign currency changes		(13,463)	(8,460)
Net benefits paid	[3]	(69,534)	(62,756)
Fair value of plan assets at end of year		838,551	878,823	903,033
Unfunded status at end of year		(355,814)	(410,514)
Other postretirement benefit plans, defined benefit [Member]
Change in benefit obligation [Roll Forward]
Benefit obligation at beginning of year		134,084	135,595
Service cost		251	255	376
Interest cost		4,588	5,199	4,957
Plan participants' contribution		4,512	4,658
Actuarial loss (gain)	[1]	(5,918)	6,455
Net curtailment loss		0	733
Impact of foreign currency changes		0	0
Plan settlements	[2]	0	0
Special termination benefits		0	0
Net benefits paid	[3]	(19,777)	(18,811)
Benefit obligation at end of year		117,740	134,084	135,595
Change in plan assets [Roll Forward]
Fair value of plan assets at beginning of year		0	0
Actual return on plan assets		0	0
Employer contribution		15,265	14,153
Plan participants' contributions		(4,512)	(4,658)
Plan settlements	[2]	0	0
Impact of foreign currency changes		0	0
Net benefits paid	[3]	(19,777)	(18,811)
Fair value of plan assets at end of year		0	0	$ 0
Unfunded status at end of year		$ (117,740)	$ (134,084)

[1] Actuarial gains in 2015 and actuarial losses in 2014 in the Company's pension benefit plans resulted from changes in mortality and discount rate assumptions, primarily for the Company's U.S. plans. Changes in financial markets during 2015 and 2014, including an increase and decrease, respectively, in corporate bond yield indices, resulted in a decrease and increase in benefit obligations, respectively.

[2] The decrease in pension plan settlements in 2015 was primarily due to a voluntary lump-sum, cash-out program offered to vested, terminated U.S. pension plan participants in the last half of 2014. The extent of the funding from the cash-out program exceeded the settlement accounting threshold, and as such in 2014, these activities have been categorized as settlements. Pension plan assets were utilized to settle pension obligations for deferred participants that elected to participate in the program.

[3] The decrease in return on plan assets in 2015 was primarily due to the poor investment performance in 2015 of U.S. and international equity securities, as compared to better-than-expected asset performance in 2014, caused by the decrease in interest rates which resulted in higher returns on fixed income securities in 2014.