Employee Benefit Plans - Benefit obligations in excess of fair value of plan assets (Detail) - USD ($)
$ in Thousands |
3 Months Ended |
12 Months Ended |
Feb. 26, 2017 |
Feb. 28, 2016 |
Nov. 27, 2016 |
Nov. 29, 2015 |
Nov. 30, 2014 |
| Pension Benefits [Member] |
|
|
|
|
|
| Change in benefit obligation [Roll Forward] |
|
|
|
|
|
| Benefit obligation at beginning of year |
$ 1,191,934
|
$ 1,194,365
|
$ 1,194,365
|
$ 1,289,337
|
|
| Service cost |
2,463
|
2,058
|
8,234
|
8,352
|
$ 8,397
|
| Interest cost |
9,180
|
9,472
|
37,819
|
47,179
|
54,958
|
| Plan participants' contribution |
|
|
484
|
534
|
|
| Actuarial loss (gain) |
|
|
33,948
|
(56,352)
|
|
| Net curtailment loss |
|
|
119
|
300
|
|
| Impact of foreign currency changes |
|
|
(15,435)
|
(21,306)
|
|
| Plan settlements |
|
|
(417)
|
(4,145)
|
|
| Special termination benefits |
|
|
0
|
0
|
|
| Net benefits paid |
|
|
(67,183)
|
(69,534)
|
|
| Benefit obligation at end of year |
|
|
1,191,934
|
1,194,365
|
1,289,337
|
| Change in plan assets [Roll Forward] |
|
|
|
|
|
| Fair value of plan assets at beginning of year |
837,322
|
838,551
|
838,551
|
878,823
|
|
| Actual return on plan assets |
|
|
49,986
|
10,185
|
|
| Employer contribution |
|
|
31,147
|
36,151
|
|
| Plan participants' contributions |
|
|
484
|
534
|
|
| Plan settlements |
|
|
(417)
|
(4,145)
|
|
| Impact of foreign currency changes |
|
|
(15,246)
|
(13,463)
|
|
| Net benefits paid |
|
|
(67,183)
|
(69,534)
|
|
| Fair value of plan assets at end of year |
|
|
837,322
|
838,551
|
878,823
|
| Unfunded status at end of year |
|
|
(354,612)
|
(355,814)
|
|
| Postretirement Benefits [Member] |
|
|
|
|
|
| Change in benefit obligation [Roll Forward] |
|
|
|
|
|
| Benefit obligation at beginning of year |
112,451
|
117,740
|
117,740
|
134,084
|
|
| Service cost |
43
|
50
|
200
|
251
|
255
|
| Interest cost |
787
|
806
|
3,223
|
4,588
|
5,199
|
| Plan participants' contribution |
|
|
4,172
|
4,512
|
|
| Actuarial loss (gain) |
|
|
5,556
|
(5,918)
|
|
| Net curtailment loss |
|
|
0
|
0
|
|
| Impact of foreign currency changes |
|
|
0
|
0
|
|
| Plan settlements |
|
|
0
|
0
|
|
| Special termination benefits |
|
|
0
|
0
|
|
| Net benefits paid |
|
|
(18,440)
|
(19,777)
|
|
| Benefit obligation at end of year |
|
|
112,451
|
117,740
|
134,084
|
| Change in plan assets [Roll Forward] |
|
|
|
|
|
| Fair value of plan assets at beginning of year |
$ 0
|
$ 0
|
0
|
0
|
|
| Actual return on plan assets |
|
|
0
|
0
|
|
| Employer contribution |
|
|
14,268
|
15,265
|
|
| Plan participants' contributions |
|
|
4,172
|
4,512
|
|
| Plan settlements |
|
|
0
|
0
|
|
| Impact of foreign currency changes |
|
|
0
|
0
|
|
| Net benefits paid |
|
|
(18,440)
|
(19,777)
|
|
| Fair value of plan assets at end of year |
|
|
0
|
0
|
$ 0
|
| Unfunded status at end of year |
|
|
$ (112,451)
|
$ (117,740)
|
|