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Supplemental Financial Information - Cash Payments for Interest and Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash Payments for Interest and Income Taxes
Interest	$ 3,657	$ 3,711	$ 3,413
Income taxes	7,096	$ 5,107	$ 5,265
Payment for purchases of transferable tax credits	$ 1,700

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- Definition

Payment For Purchases Of Third Party Transferable Tax Credits

+ References

No definition available.

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- Definition

Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 45
-Paragraph 17
-Subparagraph (d)
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