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DERIVATIVES- Terminated Interest Rate Swaps (Details) $ in Millions	Sep. 15, 2016 USD ($)	Oct. 20, 2014 USD ($)	Jan. 31, 2017 USD ($)	Oct. 31, 2016 USD ($)	Feb. 01, 2016 USD ($) contracts	Jul. 01, 2012 USD ($)	Aug. 09, 2011 USD ($) contracts	Nov. 25, 2008 USD ($) contracts	Oct. 24, 2007 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			$ 0
Terminated Derivative Contracts
Remaining deferred gain (loss) to be amortized on derivative			14	$ 16
Senior Notes 2017
Derivative Instruments and Hedging Activities Disclosure
Aggregate face amount		$ 600	100						$ 600
Amount of extinguishment of debt		$ 500
Terminated Derivative Contracts
Remaining deferred gain (loss) to be amortized on derivative				1
Senior Notes 2017 | Interest Rate Swap | Derivatives Designated as Hedging Instrument | Fair Value Hedging
Terminated Derivative Contracts
Number of interest rate swap contracts terminated | contracts								2
Notional amount of contract								$ 400
Senior Notes 2020
Terminated Derivative Contracts
Remaining deferred gain (loss) to be amortized on derivative			14	15
Senior Notes 2020 | Interest Rate Swap | Derivatives Designated as Hedging Instrument | Fair Value Hedging
Terminated Derivative Contracts
Number of interest rate swap contracts terminated | contracts							5
Notional amount of contract							$ 500
Remaining deferred gain (loss) to be amortized on derivative			14
Senior Notes 2022
Terminated Derivative Contracts
Remaining deferred gain (loss) to be amortized on derivative			0	0
Senior Notes 2022 | Treasury Lock | Derivatives Designated as Hedging Instrument | Cash Flow Hedging
Terminated Derivative Contracts
Notional amount of contract						$ 400
Remaining gain (loss) to be amortized on derivative			2
Senior Notes 2026
Terminated Derivative Contracts
Remaining deferred gain (loss) to be amortized on derivative			0	$ 0
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
Notional amount of contract					$ 300
Interest rate swap payments	$ 10
Remaining gain (loss) to be amortized on derivative			$ 9

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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-Number 210
-Article 12
-Section 13
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-Topic 835
-SubTopic 30
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Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective interest rate fair value hedge that is amortized upon discontinuation of the interest rate fair value hedge.

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The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

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