Debt and Interest Costs - Long term debt (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Long-term debt
Other (including debt issuance costs)	$ (40)	$ (45)
Long-term debt, Total	7,182	7,389
Less: Current portion of long-term debt	(78)	(79)
Long-term debt excluding current maturities	7,104	7,310
Senior Notes 5.25 Percent, due July 2025
Long-term debt
Long-term Debt, Gross	$ 1,000	1,000
Interest rate (as a percent)	5.25%
Senior Notes 4.375 Percent, due December 2020
Long-term debt
Long-term Debt, Gross	$ 1,000	1,000
Interest rate (as a percent)	4.375%
4.00% Senior Notes, due November 2023
Long-term debt
Long-term Debt, Gross	$ 1,000	1,000
Interest rate (as a percent)	4.00%
Senior Notes 4.375 Percent, euro denominated, due December 2023
Long-term debt
Long-term Debt, Gross	$ 827	736
Interest rate (as a percent)	4.375%
5.00% Senior Notes, due March 2022
Long-term debt
Long-term Debt, Gross	$ 750	750
Interest rate (as a percent)	5.00%
Senior Notes 3.50 Percent, euro denominated, due December 2020
Long-term debt
Long-term Debt, Gross	$ 473	421
Interest rate (as a percent)	3.50%
Term A Loan, due June 2021
Long-term debt
Long-term Debt, Gross	$ 1,330	1,383
Term A Loan, Euro denominated, due June 2021
Long-term debt
Long-term Debt, Gross	592	954
Multi-currency U.S. dollar revolver, due March 2021
Long-term debt
Long-term Debt, Gross	$ 250	$ 190

Net total of debt issuance costs, debt discount (premium) and other long term debt not elsewhere specified.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Name Accounting Standards Codification
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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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