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DERIVATIVES- Terminated Interest Rate Swaps (Details)
$ in Millions
Sep. 15, 2016
USD ($)
Jan. 31, 2020
USD ($)
Aug. 16, 2019
USD ($)
Feb. 01, 2016
USD ($)
contracts
Jul. 01, 2012
USD ($)
Derivative Instruments and Hedging Activities Disclosure          
Aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a net liability position   $ 3      
Senior Notes 2022 | Treasury Lock [Member] | Derivatives Designated as Hedging Instrument | Cash Flow Hedging          
Terminated Derivative Contracts          
Derivative, Notional Amount         $ 400
Remaining gain (loss) to be amortized on derivative   1      
Senior Notes 2026 | Interest Rate Swap | Derivatives Designated as Hedging Instrument | Cash Flow Hedging          
Terminated Derivative Contracts          
Number of interest rate swap contracts terminated | contracts       3  
Derivative, Notional Amount       $ 300  
Interest rate swap payments $ 10        
Remaining gain (loss) to be amortized on derivative   6      
Senior Notes 2029 | Treasury Lock [Member] | Derivatives Designated as Hedging Instrument | Cash Flow Hedging          
Terminated Derivative Contracts          
Derivative, Notional Amount     $ 250    
Remaining gain (loss) to be amortized on derivative   $ 6