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Derivative Financial Instruments Derivative Instruments (Interest Rate Contracts - Fair Value Hedging Disclosure) (Details)
$ in Millions
Jan. 28, 2017
USD ($)
Fair Value Hedging [Member] | Interest Rate Swap [Member] | Fixed Rate 8.50% Notes Due June 2019 [Member]  
Derivative [Line Items]  
Derivative, Notional Amount $ 300