Contractual interest rate for funds borrowed, under the debt agreement.

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Derivative Instruments - Balance Sheet Classification (Details) € in Millions, $ in Millions	Dec. 31, 2017 EUR (€)	Dec. 31, 2017 USD ($)	Mar. 31, 2017	Dec. 31, 2016 USD ($)	Nov. 30, 2016
Derivatives, Fair Value
Total asset derivatives		$ 17		$ 15
Total liability derivatives		$ 24		5
Senior Notes 3.125%, due 2024 (725 million EUR at December 31,2017 and 500 million EUR at December 31,2016)
Derivatives, Fair Value
Amount Hedged \| €	€ 725
Receive Rate	3.125%	3.125%	3.125%		3.125%
Average Spread	2.60%	2.60%
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Current receivables
Derivatives, Fair Value
Total asset derivatives		$ 4		9
Derivatives not designated as hedging instruments \| Foreign exchange contracts \| Other liabilities (current)
Derivatives, Fair Value
Total liability derivatives		1		5
Derivatives designated as hedging instruments \| Commodity futures contracts \| Noncurrent Receivables.
Derivatives, Fair Value
Total asset derivatives		3		$ 6
Derivatives designated as hedging instruments \| Interest Rate Swaps \| Current receivables
Derivatives, Fair Value
Total asset derivatives		6
Derivatives designated as hedging instruments \| Interest Rate Swaps \| Other liabilities (current)
Derivatives, Fair Value
Total liability derivatives		13
Derivatives designated as hedging instruments \| Hedges of multiple risks \| Current receivables
Derivatives, Fair Value
Total asset derivatives		4
Derivatives designated as hedging instruments \| Hedges of multiple risks \| Other liabilities (current)
Derivatives, Fair Value
Total liability derivatives		$ 10