Average debt service coverage ratio.

No definition available.

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- Definition

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

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

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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

Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated in current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease.

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- Definition

Amortized cost of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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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.

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Investments - Investments - Loan-to-Value and Debt Service Coverage Ratio by Origination Year (Details) $ in Millions	Sep. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Schedule of Investments [Line Items]
Current Weighted Average Loan to Value Ratio of Commercial Mortgage Loan	56.00%
Original Weighted Average Loan to Value Ratio of Commercial Mortgage loan	58.00%
Commercial Loan [Member]
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.37		2.47
Financing Receivable, before Allowance for Credit Loss	$ 6,668		$ 6,440
Financing Receivable, Allowance for Credit Loss	$ 49	$ 43	$ 44	$ 44	$ 48	$ 51
Commercial Loan [Member] \| Originated in Current Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.74		1.52
Commercial Loan [Member] \| Originated in Fiscal Year Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.49		1.39
Commercial Loan [Member] \| Originated Two Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.36		2.61
Commercial Loan [Member] \| Originated Three Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.67		2.79
Commercial Loan [Member] \| Originated Four Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.79		2.82
Commercial Loan [Member] \| Originated Five or More Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.60		2.53
Commercial Loan [Member] \| LTV Greater than 80 Percent
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.42		1.34
Commercial Loan [Member] \| LTV Greater than 80 Percent \| Originated in Current Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.83		0.63
Commercial Loan [Member] \| LTV Greater than 80 Percent \| Originated in Fiscal Year Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	0		0
Commercial Loan [Member] \| LTV Greater than 80 Percent \| Originated Two Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	0		1.05
Commercial Loan [Member] \| LTV Greater than 80 Percent \| Originated Three Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	0.80		1.03
Commercial Loan [Member] \| LTV Greater than 80 Percent \| Originated Four Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	0.98		0
Commercial Loan [Member] \| LTV Greater than 80 Percent \| Originated Five or More Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.49		1.68
Commercial Loan [Member] \| 65% - 80%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.04		2.26
Commercial Loan [Member] \| 65% - 80% \| Originated in Current Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.53		1.42
Commercial Loan [Member] \| 65% - 80% \| Originated in Fiscal Year Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	0.86		1.35
Commercial Loan [Member] \| 65% - 80% \| Originated Two Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	0.83		1.89
Commercial Loan [Member] \| 65% - 80% \| Originated Three Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.72		2.55
Commercial Loan [Member] \| 65% - 80% \| Originated Four Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.50		3.60
Commercial Loan [Member] \| 65% - 80% \| Originated Five or More Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.90		2.01
Commercial Loan [Member] \| Less than 65%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.48		2.57
Commercial Loan [Member] \| Less than 65% \| Originated in Current Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.75		1.62
Commercial Loan [Member] \| Less than 65% \| Originated in Fiscal Year Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.58		1.39
Commercial Loan [Member] \| Less than 65% \| Originated Two Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.38		2.85
Commercial Loan [Member] \| Less than 65% \| Originated Three Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.82		2.93
Commercial Loan [Member] \| Less than 65% \| Originated Four Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.99		2.67
Commercial Loan [Member] \| Less than 65% \| Originated Five or More Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.80		2.71
Amortized Cost [Member] \| Commercial Loan [Member]
Schedule of Investments [Line Items]
Mortgage loans originated in current year	$ 662		$ 471
Mortgage loans originated in year before latest fiscal year	581		496
Mortgage loans originated two years before latest fiscal year	510		916
Mortgage loans originated three years before latest fiscal year	847		1,566
Mortgage loans originated four years before latest fiscal year	1,564		618
Mortgage loans originated five or more years before latest fiscal year	2,504		2,373
Financing Receivable, before Allowance for Credit Loss	6,668		6,440
Amortized Cost [Member] \| Commercial Loan [Member] \| LTV Greater than 80 Percent
Schedule of Investments [Line Items]
Mortgage loans originated in current year	30		25
Mortgage loans originated in year before latest fiscal year	0		0
Mortgage loans originated two years before latest fiscal year	0		16
Mortgage loans originated three years before latest fiscal year	15		37
Mortgage loans originated four years before latest fiscal year	37		0
Mortgage loans originated five or more years before latest fiscal year	165		110
Financing Receivable, before Allowance for Credit Loss	247		188
Amortized Cost [Member] \| Commercial Loan [Member] \| 65% - 80%
Schedule of Investments [Line Items]
Mortgage loans originated in current year	56		89
Mortgage loans originated in year before latest fiscal year	76		7
Mortgage loans originated two years before latest fiscal year	23		204
Mortgage loans originated three years before latest fiscal year	90		421
Mortgage loans originated four years before latest fiscal year	484		100
Mortgage loans originated five or more years before latest fiscal year	335		439
Financing Receivable, before Allowance for Credit Loss	1,064		1,260
Amortized Cost [Member] \| Commercial Loan [Member] \| Less than 65%
Schedule of Investments [Line Items]
Mortgage loans originated in current year	576		357
Mortgage loans originated in year before latest fiscal year	505		489
Mortgage loans originated two years before latest fiscal year	487		696
Mortgage loans originated three years before latest fiscal year	742		1,108
Mortgage loans originated four years before latest fiscal year	1,043		518
Mortgage loans originated five or more years before latest fiscal year	2,004		1,824
Financing Receivable, before Allowance for Credit Loss	$ 5,357		$ 4,992