Investments (Credit quality indicator) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
2025	$ 0
2024	0
2022	(2)
2023	0
2021	0
Prior	(23)
Total	(25)
Mortgage loans
Debt Securities, Available-for-sale [Line Items]
2025	226
2024	101
2023	134
2022	176
2021	66
Prior	391
Total	1,094
Total	(25)	$ 0
Mortgage loans | DSCR ≥1.6x | LTV less than 55%
Debt Securities, Available-for-sale [Line Items]
2025	38
2024	0
2023	33
2022	0
2021	5
Prior	215
Total	291
Mortgage loans | DSCR ≥1.6x | LTV 55% to 65%
Debt Securities, Available-for-sale [Line Items]
2025	37
2024	0
2023	12
2022	14
2021	6
Prior	12
Total	81
Mortgage loans | DSCR ≥1.6x | LTV greater than 65%
Debt Securities, Available-for-sale [Line Items]
2025	0
2024	0
2023	0
2022	12
2021	13
Prior	0
Total	25
Mortgage loans | 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	75
Total	178
Mortgage loans | DSCR 1.2x - 1.6x | LTV 55% to 65%
Debt Securities, Available-for-sale [Line Items]
2025	107
2024	33
2023	38
2022	21
2021	19
Prior	28
Total	246
Mortgage loans | DSCR 1.2x - 1.6x | LTV greater than 65%
Debt Securities, Available-for-sale [Line Items]
2025	7
2024	0
2023	0
2022	46
2021	0
Prior	0
Total	53
Mortgage loans | 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
Mortgage loans | DSCR ≤1.2 | LTV 55% to 65%
Debt Securities, Available-for-sale [Line Items]
2025	37
2024	0
2023	17
2022	38
2021	0
Prior	15
Total	107
Mortgage loans | DSCR ≤1.2 | LTV greater than 65%
Debt Securities, Available-for-sale [Line Items]
2025	0
2024	0
2023	0
2022	40
2021	21
Prior	25
Total	$ 86