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Pension Plans and Other Retirement Benefits - Financial Information Related to Funded Defined Benefit Pension Plan and Unfunded Supplemental Pension Plan (Details) - USD ($)
$ in Thousands
 3 Months Ended
May 01, 2021
May 02, 2020
Funded Plan    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 12,219 $ 12,540
Interest cost 12,812 12,519
Expected return on plan assets (23,992) (22,242)
Amortization of net actuarial loss and prior service cost 2,803 5,509
Total expense 3,842 8,326
Unfunded Plan    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 755 709
Interest cost 780 801
Expected return on plan assets 0 0
Amortization of net actuarial loss and prior service cost 1,154 1,034
Total expense $ 2,689 $ 2,544