Retirement Benefit Plans (Obligations and Funded Status) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Apr. 29, 2017
Feb. 01, 2020
Feb. 02, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Prepaid pension   $ 120,000 $ 147,000
Change in APBO      
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits $ 112,000    
Change in fair value of plan assets      
Increase/(Decrease) in funded status of plan   $ (27,000)  
Actual return on plan assets (percent)   20.30%  
Cumulative return on plan assets since inception (percent)   9.00%  
Pension Plan [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Prepaid pension   $ 120,000 147,000
Funded status of the plan (percent)   104.00%  
Change in APBO      
Beginning balance   $ 3,016,000 3,467,000
Service cost   28,000 37,000
Interest cost   125,000 133,000
Actuarial loss/(gain)   478,000 (289,000)
Balance at measurement date   3,347,000 3,016,000
Change in fair value of plan assets      
Beginning Balance   3,163,000 3,528,000
Company contributions   0 0
Actual return on assets [1]   604,000 (33,000)
Balance at measurement date   3,467,000 3,163,000
Funded status of the plan [2]   120,000 147,000
Settlements   (153,000) (174,000)
Defined Benefit Plan, Benefit Obligation, Benefits Paid   147,000 158,000
Supplemental Employee Retirement Plan [Member]      
Change in APBO      
Beginning balance   146,000 182,000
Service cost   0 1,000
Interest cost   6,000 8,000
Actuarial loss/(gain)   14,000 (12,000)
Balance at measurement date   136,000 146,000
Change in fair value of plan assets      
Beginning Balance   0 0
Company contributions   30,000 33,000
Actual return on assets   0 0
Balance at measurement date   0 0
Funded status of the plan [3]   (136,000) (146,000)
Settlements   0 0
Defined Benefit Plan, Benefit Obligation, Benefits Paid   30,000 33,000
Current Portion of Pension Plan Liability Accrued   $ 27,000 $ 30,000
[1]
Includes plan administrative expenses.
[2]
$120 million in 2019 and $147 million in 2018 were included in Prepaid pension in the Consolidated Balance Sheets.
[3]
$27 million in 2019 and $30 million in 2018 were included in Other accounts payable and accrued expenses on the Consolidated Balance Sheets, and the remaining amounts were included in Other liabilities.