Debt - Components (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Financing Arrangements
Long-term debt	$ 1,749	$ 1,748
Short-term borrowings	68	58
Total short-term borrowings	448	438
Total debt	$ 2,197	$ 2,186
2.9% senior notes due June 1, 2030
Financing Arrangements
Debt, interest rate (as a percent)	2.90%	2.90%
Long-term debt	$ 594	$ 594
3.2% senior notes due October 1, 2026
Financing Arrangements
Debt, interest rate (as a percent)	3.20%	3.20%
Long-term debt	$ 497	$ 497
3.9% senior notes due June 1, 2050
Financing Arrangements
Debt, interest rate (as a percent)	3.90%	3.90%
Long-term debt	$ 390	$ 390
6.625% senior notes due April 15, 2037
Financing Arrangements
Debt, interest rate (as a percent)	6.625%	6.625%
Long-term debt	$ 253	$ 253
Other long-term borrowings
Financing Arrangements
Long-term debt	15	14
Term loan credit agreement due April 12, 2021
Financing Arrangements
Long-term debt, current		$ 380
Applicable interest rate (as a percent)		0.80%
Amended term loan credit agreement due March 15, 2022
Financing Arrangements
Long-term debt, current	$ 380
Applicable interest rate (as a percent)	0.75%

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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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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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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