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.

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

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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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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Weighted average interest rate of long-term debt outstanding calculated at point in time.

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Long-Term Debt and Available Credit Facilities Long Term Debt (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	May 31, 2020	Dec. 31, 2019	Mar. 22, 2019
Debt Instrument [Line Items]
Long-term Debt, Gross				$ 1,530,000,000
Finance Lease, Liability, Noncurrent	$ 4,000,000		$ 5,000,000
Unamortized debt discount and issuance costs	11,000,000		0
Long-term debt payable within one year	1,000,000		1,000,000
Long-term Debt	1,102,000,000		115,000,000
Loans Payable [Member] \| Notes Maturing 2025 [Domain]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 500,000,000		$ 0
Long-term Debt, Weighted Average Interest Rate	1.70%		0.00%
Loans Payable [Member] \| Notes Maturing 2030 [Domain]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 500,000,000		$ 0
Long-term Debt, Weighted Average Interest Rate	2.30%		0.00%
Loans Payable [Member] \| Foreign Currency Loans [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 1,000,000		$ 2,000,000
Medium-term Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 109,000,000		$ 109,000,000
Long-term Debt, Weighted Average Interest Rate	0.00%		1.61%
Senior Notes Due 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 500,000,000
Debt Instrument, Interest Rate, Stated Percentage		1.70%
Senior Notes Due 2030 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 500,000,000
Debt Instrument, Interest Rate, Stated Percentage		2.30%
Notes Maturing 2025 [Domain]
Debt Instrument [Line Items]
Line of Credit Facility, Periodic Payment, Principal	$ 500,000,000
Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	$ 1,166,000,000		$ 114,000,000