Other Financial Data - Schedule of Other Income (Expense) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Dispositions
Gain from disposals of businesses	$ 20	$ 0
Equity loss	0	(2)
Pension and other postretirement	(15)	(23)
Foreign currency remeasurement	9	(16)
Financial instruments and other	(9)	31
Total	5	(10)
Deferred consideration on divestiture		$ 20
Discontinued Operations, Disposed of by Sale | NFP Wealth
Dispositions
Gain from disposals of businesses	$ 20