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Borrowings - Schedule of Outstanding Borrowings (Parenthetical) (Details) - USD ($) $ in Billions	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021	Mar. 31, 2021
Outstanding Borrowings
Weighted-average effective interest rate (as a percent)	3.80%
Commercial Paper
Outstanding Borrowings
Maximum borrowing capacity	$ 1.5
Maximum days to maturity	397 days
Weighted-average effective interest rate (as a percent)	3.40%
Weighted-average term	3 days
4.250% Notes Due 2023
Outstanding Borrowings
Stated interest rate (as a percent)	4.25%	4.25%
2.850% Notes Due 2025
Outstanding Borrowings
Stated interest rate (as a percent)	2.85%	2.85%
1.350% Notes Due 2026
Outstanding Borrowings
Stated interest rate (as a percent)	1.35%	1.35%	1.35%
2.750% Notes Due 2031
Outstanding Borrowings
Stated interest rate (as a percent)	2.75%	2.75%	2.75%
6.200% Notes Due 2036
Outstanding Borrowings
Stated interest rate (as a percent)	6.20%	6.20%
6.200% Notes Due 2040
Outstanding Borrowings
Stated interest rate (as a percent)	6.20%	6.20%

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Weighted average interest rate of debt outstanding.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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