Income Tax (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Proceeds from Income Tax Refunds	$ 3	$ 20	$ 59
Cash paid for income taxes	131	388	167
Decrease in Unrecognized Tax Benefits is Reasonably Possible	14
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	56
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	3	3
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense		(31)	(11)
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	25
Cash paid for income taxes	131	388	167
Deferred Tax Assets, Valuation Allowance	221	218
Proceeds from Income Tax Refunds	3	20	59
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability	1,600	1,800
Operating Loss Carryforwards	1,160
Unrecognized Tax Benefits	35	34	$ 342	$ 333
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	3	$ 3
Foreign Tax Authority | Revenue Commissioners, Ireland
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	$ 24