Average debt service coverage ratio.

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- Definition

Current weighted average loan to value ratio of commercial mortgage loan.

+ References

No definition available.

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- Definition

Original weighted average loan to value ratio of commercial mortgage loan.

+ References

No definition available.

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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- Definition

Amount of financing receivable originated more than five years prior to current fiscal year.

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- Definition

Amount of financing receivable originated four years prior to current fiscal year.

+ References

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- Definition

Amount of financing receivable originated in current fiscal year.

+ References

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- Definition

Amount of financing receivable originated in fiscal year prior to current fiscal year.

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- Definition

Amount of financing receivable originated three years prior to current fiscal year.

+ References

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- Definition

Amount of financing receivable originated two years prior to current fiscal year.

+ References

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- Definition

Amount, before allowance for credit loss, of financing receivable.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Investments - Investments - Loan-to-Value and Debt Service Coverage Ratio by Origination Year (Details) $ in Millions	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Schedule of Investments [Line Items]
Current Weighted Average Loan to Value Ratio of Commercial Mortgage Loan	52.00%
Original Weighted Average Loan to Value Ratio of Commercial Mortgage loan	60.00%
Commercial Loan [Member]
Schedule of Investments [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 5,132		$ 4,531
Avg. Debt-Service Coverage Ratio	2.47		2.52
Financing Receivable, Allowance for Credit Loss	$ 26	$ 24	$ 38	$ 38	$ 43	$ 0
Commercial Loan [Member] \| 65% - 80%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.52		1.59
Commercial Loan [Member] \| Less than 65%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.55		2.69
Amortized Cost [Member] \| Commercial Loan [Member]
Schedule of Investments [Line Items]
Mortgage loans originated in current year	$ 1,023		$ 687
Mortgage loans originated in year before latest fiscal year	705		919
Mortgage loans originated two years before latest fiscal year	863		622
Mortgage loans originated three years before latest fiscal year	596		491
Mortgage loans originated four years before latest fiscal year	464		286
Mortgage loans originated five or more years before latest fiscal year	1,481		1,526
Financing Receivable, before Allowance for Credit Loss	5,132		4,531
Amortized Cost [Member] \| Commercial Loan [Member] \| 65% - 80%
Schedule of Investments [Line Items]
Mortgage loans originated in current year	3		28
Mortgage loans originated in year before latest fiscal year	51		243
Mortgage loans originated two years before latest fiscal year	91		212
Mortgage loans originated three years before latest fiscal year	111		45
Mortgage loans originated four years before latest fiscal year	45		51
Mortgage loans originated five or more years before latest fiscal year	125		115
Financing Receivable, before Allowance for Credit Loss	426		694
Amortized Cost [Member] \| Commercial Loan [Member] \| Less than 65%
Schedule of Investments [Line Items]
Mortgage loans originated in current year	1,020		659
Mortgage loans originated in year before latest fiscal year	654		676
Mortgage loans originated two years before latest fiscal year	772		410
Mortgage loans originated three years before latest fiscal year	485		446
Mortgage loans originated four years before latest fiscal year	419		235
Mortgage loans originated five or more years before latest fiscal year	1,356		1,411
Financing Receivable, before Allowance for Credit Loss	$ 4,706		$ 3,837
Originated in Current Fiscal Year \| Commercial Loan [Member]
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.86		2.52
Originated in Current Fiscal Year \| Commercial Loan [Member] \| 65% - 80%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.25		1.62
Originated in Current Fiscal Year \| Commercial Loan [Member] \| Less than 65%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.86		2.56
Originated in Fiscal Year Before Latest Fiscal Year \| Commercial Loan [Member]
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.75		2.51
Originated in Fiscal Year Before Latest Fiscal Year \| Commercial Loan [Member] \| 65% - 80%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.63		1.58
Originated in Fiscal Year Before Latest Fiscal Year \| Commercial Loan [Member] \| Less than 65%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.76		2.85
Originated Two Years Before Latest Fiscal Year \| Commercial Loan [Member]
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.57		1.94
Originated Two Years Before Latest Fiscal Year \| Commercial Loan [Member] \| 65% - 80%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.37		1.33
Originated Two Years Before Latest Fiscal Year \| Commercial Loan [Member] \| Less than 65%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.71		2.25
Originated Three Years Before Latest Fiscal Year \| Commercial Loan [Member]
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.99		1.90
Originated Three Years Before Latest Fiscal Year \| Commercial Loan [Member] \| 65% - 80%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.04		2.02
Originated Three Years Before Latest Fiscal Year \| Commercial Loan [Member] \| Less than 65%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.21		1.89
Originated Four Years Before Latest Fiscal Year \| Commercial Loan [Member]
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.87		2.80
Originated Four Years Before Latest Fiscal Year \| Commercial Loan [Member] \| 65% - 80%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.75		1.92
Originated Four Years Before Latest Fiscal Year \| Commercial Loan [Member] \| Less than 65%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.88		2.99
Originated Five or More Years Before Latest Fiscal Year \| Commercial Loan [Member]
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.38		2.92
Originated Five or More Years Before Latest Fiscal Year \| Commercial Loan [Member] \| 65% - 80%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.52		1.74
Originated Five or More Years Before Latest Fiscal Year \| Commercial Loan [Member] \| Less than 65%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.46		3.01