Quarterly report pursuant to Section 13 or 15(d)

Retirement Benefit Plans (Defined Contribution Plans) (Details)

v3.10.0.1
Retirement Benefit Plans (Defined Contribution Plans) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Nov. 03, 2018
Oct. 28, 2017
Nov. 03, 2018
Oct. 28, 2017
Mar. 31, 2017
Jan. 28, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]            
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement $ 0 $ (12) $ 0 $ (12)    
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement   $ 195        
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate   3.94%   3.94% 4.34% 4.40%
Pension Plan [Member]            
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]            
Defined Benefit Plan, Funded Status of Plan, Percent   100.00%   100.00% 98.00%