Face (par) amount of debt instrument at time of issuance.

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- Definition

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

+ References

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- Definition

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.

+ References

No definition available.

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- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

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- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Financial Instruments - Long-Term Debt, Narrative (Details) € in Billions	1 Months Ended		12 Months Ended
	Nov. 30, 2020 USD ($)	Jan. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2020	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Jan. 31, 2019 EUR (€)	Sep. 30, 2018 USD ($)
Debt Instrument [Line Items]
Loss on early retirement of debt			$ 138,000,000
Senior Unsecured Euro Debt, 5.75%, Due 2021 [Member]
Debt Instrument [Line Items]
Loss on early retirement of debt		$ 138,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, face amount						$ 5,000,000,000.0		$ 5,000,000,000.0
Weighted average interest rate						3.57%		3.56%
Loss on early retirement of debt	$ 36,000,000
Senior Notes [Member] \| Senior Unsecured Debt, One Point Nine Five Percent, Due 2021 [Member]
Debt Instrument [Line Items]
Repurchased debt	$ 1,150,000,000
Stated interest rate	1.95%
Senior Notes [Member] \| Senior Unsecured Debt, Five Point Eight Zero Percent, Due 2023 [Member]
Debt Instrument [Line Items]
Repurchased debt	$ 342,000,000
Stated interest rate	5.80%
Senior Notes [Member] \| Senior Unsecured Euro Debt, 5.75%, Due 2021 [Member]
Debt Instrument [Line Items]
Repurchased debt		$ 1,300,000,000					€ 1.1
Stated interest rate		5.75%					5.75%
Redemption value		$ 1,500,000,000					€ 1.3
Unsecured Debt [Member]
Debt Instrument [Line Items]
Weighted average interest rate			1.20%	2.60%
Unsecured Debt [Member] \| Senior Notes Due 2047 [Member]
Debt Instrument [Line Items]
Repurchased debt					$ 1,065,000,000.000