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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Income taxes
Effective tax rate on income from continuing operations (as a percent)	20.00%	15.10%
Credit carryforwards	$ 60
Valuation allowance, deferred tax assets	64		$ 65
Gross unrecognized tax benefits	169		168
Unrecognized tax benefits, net of federal tax benefits, that would affect the effective tax rate if recognized	140		137
Increase (decrease) in interest and penalties	4	$ 7
Payable related to accrued interest and penalties	59		$ 55
State net operating losses
Income taxes
Valuation allowance, deferred tax assets	29
State deferred tax assets
Income taxes
Valuation allowance, deferred tax assets	2
Foreign net operating losses
Income taxes
Valuation allowance, deferred tax assets	33
Non-US
Income taxes
Deferred tax assets, loss carryforwards	48
State
Income taxes
Deferred tax assets, loss carryforwards	$ 34