Investments (Credit quality indicator) (Details) - Mortgage loans $ in Millions	Jun. 30, 2025 USD ($)
Debt Securities, Available-for-sale [Line Items]
2025	$ 62
2024	101
2023	126
2022	231
2021	76
Prior	484
Total	1,080
DSCR ≥1.6x \| LTV less than 55%
Debt Securities, Available-for-sale [Line Items]
2025	0
2024	0
2023	33
2022	6
2021	5
Prior	213
Total	257
DSCR ≥1.6x \| LTV 55% to 65%
Debt Securities, Available-for-sale [Line Items]
2025	12
2024	0
2023	12
2022	14
2021	6
Prior	16
Total	60
DSCR ≥1.6x \| LTV greater than 65%
Debt Securities, Available-for-sale [Line Items]
2025	0
2024	0
2023	0
2022	30
2021	12
Prior	0
Total	42
DSCR 1.2x - 1.6x \| LTV less than 55%
Debt Securities, Available-for-sale [Line Items]
2025	0
2024	68
2023	28
2022	5
2021	2
Prior	130
Total	233
DSCR 1.2x - 1.6x \| LTV 55% to 65%
Debt Securities, Available-for-sale [Line Items]
2025	13
2024	33
2023	31
2022	21
2021	30
Prior	36
Total	164
DSCR 1.2x - 1.6x \| LTV greater than 65%
Debt Securities, Available-for-sale [Line Items]
2025	0
2024	0
2023	0
2022	46
2021	0
Prior	0
Total	46
DSCR ≤1.2 \| LTV less than 55%
Debt Securities, Available-for-sale [Line Items]
2025	0
2024	0
2023	6
2022	0
2021	0
Prior	21
Total	27
DSCR ≤1.2 \| LTV 55% to 65%
Debt Securities, Available-for-sale [Line Items]
2025	37
2024	0
2023	16
2022	74
2021	0
Prior	20
Total	147
DSCR ≤1.2 \| LTV greater than 65%
Debt Securities, Available-for-sale [Line Items]
2025	0
2024	0
2023	0
2022	35
2021	21
Prior	48
Total	$ 104

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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