Comprehensive Income - Schedule of Changes in Balances of Each Component of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	$ (70)	$ 61	$ 58	$ 79
Other comprehensive income before reclassifications	122	(26)	249	(11)
Amounts reclassified from accumulated other comprehensive income	(4)	1	(5)	(3)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(126)	27	(254)	8
Ending Balance	(196)	87	(196)	87
Income Tax Expense (Benefit)	1	11	1	13
Unrealized Gains (Losses) on Available-for-Sale Securities [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	49	142	154	166
Other comprehensive income before reclassifications	67	(25)	171	(4)
Amounts reclassified from accumulated other comprehensive income	(5)	1	(6)	(2)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(72)	26	(177)	2
Ending Balance	(23)	168	(23)	168
Accumulated Translation Adjustment [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(123)	(86)	(100)	(92)
Other comprehensive income before reclassifications	55	(1)	78	(8)
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(55)	1	(78)	8
Ending Balance	(177)	(84)	(177)	(84)
Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(1)	(1)	(1)	0
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	1	0	1	(1)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	1	0	1	(1)
Ending Balance	0	(1)	0	(1)
Other Postretirement Benefits Plan [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	4	5	4	5
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	0	0	0	(1)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0	0	0	(1)
Ending Balance	4	5	4	5
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Available-for-Sale Securities [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Income Tax Expense (Benefit)	2	0	2	(1)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member]
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Income Tax Expense (Benefit)			0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Postretirement Benefits Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	0	0	0	(1)
Changes In Accumulated Other Comprehensive Income [Roll Forward]
Amounts reclassified from accumulated other comprehensive income	0	0	0	(1)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	0	0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	0	0	0	(1)
Income Tax Expense (Benefit)	$ 0	$ 0	$ 0	$ 0