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Pension and Postretirement Health Care Plans - Schedule of Amounts in Accumulated Other Comprehensive Income (Details) - Pension Plan - USD ($)
$ in Millions
Jan. 30, 2016
Jan. 31, 2015
Feb. 01, 2014
Defined Benefit Plan Disclosure [Line Items]      
Net actuarial loss $ 1,022 $ 1,018  
Prior service credits (57) (69)  
Amounts in accumulated other comprehensive income $ 965 $ 949 $ 712