Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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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.

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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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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Debt - Schedule of Long-term Debt at Carrying Value and Fair Value (Details) - USD ($) $ in Millions	Dec. 31, 2019	Mar. 01, 2019	Dec. 31, 2018	Nov. 30, 2016	May 31, 2015	May 31, 2014	Feb. 28, 2014	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2009	Dec. 31, 2005
Debt Instrument [Line Items]
Carrying Value	$ 7,758		$ 7,379
Fair Value	8,614		7,665
Less: Current maturities of long-term debt	(4)		(1,350)
Total long-term debt	7,754		6,029
Other borrowings
Debt Instrument [Line Items]
Carrying Value	3		4
Fair Value	$ 3		$ 4
1.95% notes due March 1, 2019
Debt Instrument [Line Items]
Interest rate, stated percentage			1.95%
1.95% notes due March 1, 2019 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	1.95%	1.95%					1.95%
Effective interest rate	1.98%
Carrying Value	$ 0		$ 650
Fair Value	$ 0		$ 649
6.25% notes due April 1, 2019
Debt Instrument [Line Items]
Interest rate, stated percentage			6.25%
6.25% notes due April 1, 2019 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	6.25%									6.25%
Effective interest rate	6.25%
Carrying Value	$ 0		$ 700
Fair Value	$ 0		706
4.88% notes due thru December 31, 2020
Debt Instrument [Line Items]
Interest rate, stated percentage	4.88%
4.88% notes due thru December 31, 2020 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	4.88%										4.88%
Effective interest rate	4.96%
Carrying Value	$ 4		4
Fair Value	$ 4		4
3.375% notes due September 15, 2021 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	3.375%								3.375%
Effective interest rate	3.43%
Carrying Value	$ 349		349
Fair Value	$ 358		354
1.75% Euro notes due May 20, 2022 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	1.75%					1.75%
Effective interest rate	1.86%
Carrying Value	$ 558		570
Fair Value	$ 584		603
1.25% Euro notes due May 22, 2023 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	1.25%				1.25%
Effective interest rate	1.35%
Carrying Value	$ 558		569
Fair Value	$ 584		596
3.50% notes due March 1, 2024 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	3.50%						3.50%
Effective interest rate	3.54%
Carrying Value	$ 697		696
Fair Value	$ 742		712
0.25% Euro notes due December 5, 2024 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	0.25%
Effective interest rate	0.31%
Carrying Value	$ 668		0
Fair Value	$ 677		0
2.65% notes due November 15, 2026 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	2.65%			2.65%
Effective interest rate	2.69%
Carrying Value	$ 993		993
Fair Value	$ 1,032		933
0.625% Euro notes due December 5, 2027 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	0.625%
Effective interest rate	0.71%
Carrying Value	$ 554		0
Fair Value	$ 570		0
2.125% Euro notes due May 22, 2030 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	2.125%				2.125%
Effective interest rate	2.18%
Carrying Value	$ 555		567
Fair Value	$ 644		620
1.00% Euro notes due June 5, 2031 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	1.00%
Effective interest rate	1.09%
Carrying Value	$ 552		0
Fair Value	$ 580		0
3.00% Euro notes due May 19, 2034 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	3.00%					3.00%
Effective interest rate	3.13%
Carrying Value	$ 548		560
Fair Value	$ 724		678
4.875% notes due September 15, 2041 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	4.875%								4.875%
Effective interest rate	4.97%
Carrying Value	$ 637		636
Fair Value	$ 829		719
3.90% notes due September 1, 2042 \| Unsecured debt
Debt Instrument [Line Items]
Interest rate, stated percentage	3.90%							3.90%
Effective interest rate	3.96%
Carrying Value	$ 1,082		1,081
Fair Value	$ 1,283		$ 1,087