Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Adoption of New Accounting Standard Current Expected Credit Losses	$ 0		$ 14		$ 0
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Balance, Beginning Balance	251		236		181
Valuation Allowances and Reserves, Charged to Cost and Expense	18		4		56
Valuation Allowances and Reserves, Charged to Other Accounts	15		19		1
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction	0		0		0
Valuation Allowances and Reserves, Balance, Ending Balance	218		251		236
SEC Schedule, 12-09, Allowance, Loan and Lease Loss, Real Estate [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Balance, Beginning Balance	64	[1]	12	[1]	11
Valuation Allowances and Reserves, Charged to Cost and Expense	0		38	[1]	1
Valuation Allowances and Reserves, Charged to Other Accounts	0		14	[1]	0
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction	29		0	[1]	0
Valuation Allowances and Reserves, Balance, Ending Balance	35		64	[1]	12	[1]
SEC Schedule, 12-09, Allowance, Loss on Finance Receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Balance, Beginning Balance	20		0
Valuation Allowances and Reserves, Charged to Cost and Expense	27		41
Valuation Allowances and Reserves, Charged to Other Accounts	0		0
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction	16		21
Valuation Allowances and Reserves, Balance, Ending Balance	$ 31		$ 20		$ 0

[1] Upon adoption of Financial Instruments – Credits Losses on January 1, 2020, the Company increased the valuation allowance for mortgage loans by $14 million. The increase was reflected as a decrease to opening retained earnings, net of income taxes.