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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- Definition

Date the debt instrument was issued, in CCYY-MM-DD format.

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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.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Debt (Unsecured Fixed Rate Debt Securities Issued Under Current Shelf Registration) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 10, 2021	May 20, 2021
2.375% Notes Due 2031 [Member]
Debt Instrument [Line Items]
Issuance date	May 20, 2021
Note amount			$ 850
Interest rate			2.375%
Maturity date	May 20, 2031
3.200% Notes Due 2041 [Member]
Debt Instrument [Line Items]
Issuance date	May 20, 2021
Note amount			$ 1,000
Interest rate			3.20%
Maturity date	May 20, 2041
3.550% Notes Due 2061 [Member]
Debt Instrument [Line Items]
Issuance date	May 20, 2021
Note amount			$ 650
Interest rate			3.55%
Maturity date	May 20, 2061
2.375% Notes Due 2031 [Member]
Debt Instrument [Line Items]
Issuance date	Sep. 10, 2021
Note amount		$ 150
Interest rate		2.375%
Maturity date	May 20, 2031
2.950% Notes Due 2052 [Member]
Debt Instrument [Line Items]
Issuance date	Sep. 10, 2021
Note amount		$ 850
Interest rate		2.95%
Maturity date	Mar. 10, 2052