Average debt service coverage ratio.

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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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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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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	Jun. 30, 2026 USD ($)	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
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	2.27		2.36
Financing Receivable, before Allowance for Credit Loss	$ 7,311		$ 6,886
Financing Receivable, Allowance for Credit Loss	$ 49	$ 49	$ 49	$ 43	$ 43	$ 44
Commercial Loan [Member] \| Originated in Current Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.77		1.79
Commercial Loan [Member] \| Originated in Fiscal Year Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.72		1.50
Commercial Loan [Member] \| Originated Two Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.37		1.37
Commercial Loan [Member] \| Originated Three Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.34		2.77
Commercial Loan [Member] \| Originated Four Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.84		2.93
Commercial Loan [Member] \| Originated Five or More Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.66		2.56
Commercial Loan [Member] \| LTV Greater than 80 Percent
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.54		1.38
Commercial Loan [Member] \| LTV Greater than 80 Percent \| Originated in Current Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	0		1.83
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	1.37		0
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		0
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		0.98
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	1.58		1.39
Commercial Loan [Member] \| 65% - 80%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.11		2.14
Commercial Loan [Member] \| 65% - 80% \| Originated in Current Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	0		1.53
Commercial Loan [Member] \| 65% - 80% \| Originated in Fiscal Year Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.05		1.03
Commercial Loan [Member] \| 65% - 80% \| Originated Two Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	0.95		0.83
Commercial Loan [Member] \| 65% - 80% \| Originated Three Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.00		1.65
Commercial Loan [Member] \| 65% - 80% \| Originated Four Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.63		2.72
Commercial Loan [Member] \| 65% - 80% \| Originated Five or More Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.33		1.96
Commercial Loan [Member] \| Less than 65%
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	2.31		2.44
Commercial Loan [Member] \| Less than 65% \| Originated in Current Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.77		1.80
Commercial Loan [Member] \| Less than 65% \| Originated in Fiscal Year Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.74		1.57
Commercial Loan [Member] \| Less than 65% \| Originated Two Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.55		1.40
Commercial Loan [Member] \| Less than 65% \| Originated Three Years Before Latest Fiscal Year
Schedule of Investments [Line Items]
Avg. Debt-Service Coverage Ratio	1.36		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	3.03		3.10
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	2.81		2.75
Amortized Cost [Member] \| Commercial Loan [Member]
Schedule of Investments [Line Items]
Mortgage loans originated in current year	$ 682		$ 1,209
Mortgage loans originated in year before latest fiscal year	1,231		611
Mortgage loans originated two years before latest fiscal year	684		424
Mortgage loans originated three years before latest fiscal year	331		740
Mortgage loans originated four years before latest fiscal year	707		1,473
Mortgage loans originated five or more years before latest fiscal year	3,676		2,429
Financing Receivable, before Allowance for Credit Loss	7,311		6,886
Amortized Cost [Member] \| Commercial Loan [Member] \| LTV Greater than 80 Percent
Schedule of Investments [Line Items]
Mortgage loans originated in current year	0		30
Mortgage loans originated in year before latest fiscal year	0		0
Mortgage loans originated two years before latest fiscal year	28		0
Mortgage loans originated three years before latest fiscal year	0		0
Mortgage loans originated four years before latest fiscal year	0		36
Mortgage loans originated five or more years before latest fiscal year	160		164
Financing Receivable, before Allowance for Credit Loss	188		230
Amortized Cost [Member] \| Commercial Loan [Member] \| 65% - 80%
Schedule of Investments [Line Items]
Mortgage loans originated in current year	0		56
Mortgage loans originated in year before latest fiscal year	39		76
Mortgage loans originated two years before latest fiscal year	49		23
Mortgage loans originated three years before latest fiscal year	16		95
Mortgage loans originated four years before latest fiscal year	95		444
Mortgage loans originated five or more years before latest fiscal year	764		315
Financing Receivable, before Allowance for Credit Loss	963		1,009
Amortized Cost [Member] \| Commercial Loan [Member] \| Less than 65%
Schedule of Investments [Line Items]
Mortgage loans originated in current year	682		1,123
Mortgage loans originated in year before latest fiscal year	1,192		535
Mortgage loans originated two years before latest fiscal year	607		401
Mortgage loans originated three years before latest fiscal year	315		645
Mortgage loans originated four years before latest fiscal year	612		993
Mortgage loans originated five or more years before latest fiscal year	2,752		1,950
Financing Receivable, before Allowance for Credit Loss	$ 6,160		$ 5,647