Supplemental Equity and Comprehensive Income Information - Schedule of Reclassifications Out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Amount Reclassified from Accumulated Other Comprehensive Income
Provision for income taxes	$ 221	$ 265
Reclassification out of Accumulated Other Comprehensive Income (Loss) \| Defined benefit pension and postretirement plans adjustment
Amount Reclassified from Accumulated Other Comprehensive Income
Provision for income taxes	(16)	(18)
Reclassification out of Accumulated Other Comprehensive Income (Loss) \| Cash flow hedging instruments
Amount Reclassified from Accumulated Other Comprehensive Income
Provision for income taxes	$ (2)	$ 5

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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+ Details