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.

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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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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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

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Amount of interest payable on debt, including, but not limited to, trade payables.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.

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Long-Term Debt (Narrative) (Details) - USD ($)	1 Months Ended		3 Months Ended	12 Months Ended
Long-Term Debt (Narrative) (Details) - USD ($)	May 31, 2021	Feb. 28, 2021	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Interest payable				$ 429,000,000	$ 458,000,000
Repayments of long-term debt				6,542,000,000	$ 1,000,000,000	$ 1,144,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Principle amount of notes repurchased			$ 4,042,000,000
Senior Notes [Member] \| Change of Control and Loss of Investment Grade Rating [Member]
Debt Instrument [Line Items]
Required purchase price as percentage of aggregate principal amount		101.00%
USD Denominated Notes [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Face value		$ 5,500,000,000
Interest rate	4.75%
Repayments of unsecured debt	$ 1,500,000,000
USD Notes, 2.450% [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Face value		$ 1,750,000,000		$ 1,750,000,000
Interest rate		2.45%		2.45%
USD Notes, 3.400% [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Face value		$ 1,500,000,000		$ 1,500,000,000
Interest rate		3.40%		3.40%
USD Notes, 3.700% [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Face value		$ 1,250,000,000		$ 1,250,000,000
Interest rate		3.70%		3.70%
USD Notes, 4.000% [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Face value		$ 1,000,000,000		$ 1,000,000,000
Interest rate		4.00%		4.00%
USD Denominated Notes, 3.490 Percent, Due 2022 \| Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate			3.49%
Repayments of long-term debt			$ 1,000,000,000