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Debt (Financing Activities) (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended				12 Months Ended
	Feb. 28, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Feb. 05, 2026
Debt Instrument [Line Items]
Debt Issuances						$ 14,111
Proceeds from Issuance of Long-Term Debt		$ 0	$ 7,598	$ 3,473	$ 2,956	14,027	$ 19	$ 10,004
Various Notes
Debt Instrument [Line Items]
Amount of borrowings repaid / debt exchanged						$ 5,399
Long-Term Debt, Weighted Average Interest Rate, over Time						4.70%
Average-weighted maturity						12 years 3 months 18 days
Debt, Weighted Average Interest Rate		5.00%				5.00%
Various Global Notes Due 2031 To 2056 \| Subsequent Event
Debt Instrument [Line Items]
Debt issued, principal amount	$ 6,500
Debt, Weighted Average Interest Rate									5.20%