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Pension Plans and Other Retirement Benefits - Components of Net Periodic Benefit Cost and Other Amounts Recognized in Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 4 Months Ended 8 Months Ended 12 Months Ended
Nov. 03, 2018
Nov. 03, 2018
Feb. 02, 2019
Sep. 30, 2018
Feb. 01, 2020
Feb. 02, 2019
Feb. 03, 2018
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]              
Settlement charge         $ 0 $ 36,122 $ 0
Funded Plan              
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]              
Service cost         44,685 45,342 46,845
Interest cost         52,172 54,355 55,301
Expected return on plan assets         (74,141) (79,190) (69,345)
Amortization of prior service cost         377 377 377
Amortization of net actuarial loss         19,055 12,250 21,557
Settlement charge   $ (36,100)     0 36,122 0
Total expense         42,148 69,256 54,735
Net (gain) loss         71,590 68,770 (38,293)
Amortization of net (loss)         (19,055) (12,250) (21,557)
Settlement charge         0 (36,122) 0
Amortization of prior service cost         (377) (377) (377)
Total recognized in other comprehensive income (loss)         52,158 20,021 (60,227)
Total recognized in net periodic benefit cost and other comprehensive income (loss)         $ 94,306 $ 89,277 $ (5,492)
Discount rate 4.40%   4.40% 4.00% 4.30%   4.40%
Expected rate of return on plan assets 6.00%   6.00% 6.00% 6.00%   6.00%
Rate of compensation increase         4.00% 4.00% 4.00%
Unfunded Plan              
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]              
Service cost         $ 2,059 $ 2,391 $ 1,888
Interest cost         3,740 3,600 3,316
Amortization of net actuarial loss         3,124 3,409 2,852
Total expense         8,923 9,400 8,056
Net (gain) loss         4,682 5,955 4,580
Amortization of net (loss)         (3,124) (3,409) (2,852)
Total recognized in other comprehensive income (loss)         1,558 2,546 1,728
Total recognized in net periodic benefit cost and other comprehensive income (loss)         $ 10,481 $ 11,946 $ 9,784
Discount rate         4.10% 3.80% 4.00%
Rate of compensation increase         6.00% 6.00% 6.00%
Unfunded Plan | Primary Benefit              
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]              
Rate of compensation increase         6.00%    
Unfunded Plan | Alternative Benefit              
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]              
Rate of compensation increase         4.00%