v3.26.1
Investments (Credit Quality Indicators) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]    
Recording investment gross of allowance for credit losses $ 66,490 $ 65,184
Commercial Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 3,676 7,163
One Years Prior 6,330 7,341
Two Years Prior 7,171 5,172
Three Years Prior 4,955 3,284
Four Years Prior 3,070 5,506
Prior 29,106 25,975
Revolving Loans 57 62
Recording investment gross of allowance for credit losses 54,365 54,503
Commercial Mortgage Loans | ≥ 1.2X    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 2,605 6,602
One Years Prior 5,771 6,779
Two Years Prior 6,686 4,673
Three Years Prior 4,660 2,963
Four Years Prior 2,777 5,333
Prior 26,688 23,384
Revolving Loans 45 45
Recording investment gross of allowance for credit losses 49,232 49,779
Commercial Mortgage Loans | 1.0 - 1.2x    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 921 463
One Years Prior 461 534
Two Years Prior 458 499
Three Years Prior 161 238
Four Years Prior 236 82
Prior 681 885
Revolving Loans 12 17
Recording investment gross of allowance for credit losses 2,930 2,718
Commercial Mortgage Loans | Less than 1.0x    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 150 98
One Years Prior 98 28
Two Years Prior 27 0
Three Years Prior 134 83
Four Years Prior 57 91
Prior 1,737 1,706
Revolving Loans 0 0
Recording investment gross of allowance for credit losses 2,203 2,006
Agricultural property loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 117 893
One Years Prior 903 764
Two Years Prior 744 855
Three Years Prior 849 1,418
Four Years Prior 1,363 1,969
Prior 3,954 2,132
Revolving Loans 200 244
Recording investment gross of allowance for credit losses 8,130 8,275
Agricultural property loans | ≥ 1.2X    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 112 893
One Years Prior 903 741
Two Years Prior 703 799
Three Years Prior 794 741
Four Years Prior 732 1,849
Prior 3,455 1,756
Revolving Loans 193 201
Recording investment gross of allowance for credit losses 6,892 6,980
Agricultural property loans | 1.0 - 1.2x    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 5 0
One Years Prior 0 19
Two Years Prior 22 40
Three Years Prior 41 65
Four Years Prior 64 62
Prior 235 148
Revolving Loans 0 0
Recording investment gross of allowance for credit losses 367 334
Agricultural property loans | Less than 1.0x    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 0 0
One Years Prior 0 4
Two Years Prior 19 16
Three Years Prior 14 612
Four Years Prior 567 58
Prior 264 228
Revolving Loans 7 43
Recording investment gross of allowance for credit losses 871 961
Residential Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 534 1,561
One Years Prior 2,502 57
Two Years Prior 58 0
Three Years Prior 0 0
Four Years Prior 0 0
Prior 12 14
Recording investment gross of allowance for credit losses 3,106 1,632
Performing | Residential Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 534 1,561
One Years Prior 2,487 57
Two Years Prior 58 0
Three Years Prior 0 0
Four Years Prior 0 0
Prior 12 14
Recording investment gross of allowance for credit losses 3,091 1,632
Nonperforming | Residential Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 0 0
One Years Prior 15 0
Two Years Prior 0 0
Three Years Prior 0 0
Four Years Prior 0 0
Prior 0 0
Recording investment gross of allowance for credit losses 15 0
0%-59.99% | Commercial Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 1,621 2,816
One Years Prior 2,456 2,088
Two Years Prior 2,782 2,057
Three Years Prior 2,221 1,270
Four Years Prior 1,407 2,570
Prior 17,585 16,546
Revolving Loans 57 62
Recording investment gross of allowance for credit losses 28,129 27,409
0%-59.99% | Agricultural property loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 115 813
One Years Prior 813 624
Two Years Prior 605 296
Three Years Prior 268 977
Four Years Prior 906 1,944
Prior 3,653 1,927
Revolving Loans 137 143
Recording investment gross of allowance for credit losses 6,497 6,724
60%-69.99% | Commercial Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 1,196 3,670
One Years Prior 3,211 4,506
Two Years Prior 3,847 1,873
Three Years Prior 1,682 1,250
Four Years Prior 990 1,581
Prior 4,112 3,048
Revolving Loans 0 0
Recording investment gross of allowance for credit losses 15,038 15,928
60%-69.99% | Agricultural property loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 0 76
One Years Prior 62 140
Two Years Prior 139 554
Three Years Prior 554 8
Four Years Prior 38 15
Prior 113 85
Revolving Loans 0 58
Recording investment gross of allowance for credit losses 906 936
70%-79.99% | Commercial Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 804 677
One Years Prior 615 711
Two Years Prior 507 1,242
Three Years Prior 963 506
Four Years Prior 476 901
Prior 2,953 1,948
Revolving Loans 0 0
Recording investment gross of allowance for credit losses 6,318 5,985
70%-79.99% | Agricultural property loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 0 0
One Years Prior 24 0
Two Years Prior 0 0
Three Years Prior 0 0
Four Years Prior 0 0
Prior 0 16
Revolving Loans 56 0
Recording investment gross of allowance for credit losses 80 16
80% or greater | Commercial Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 55 0
One Years Prior 48 36
Two Years Prior 35 0
Three Years Prior 89 258
Four Years Prior 197 454
Prior 4,456 4,433
Revolving Loans 0 0
Recording investment gross of allowance for credit losses 4,880 5,181
80% or greater | Agricultural property loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 2 4
One Years Prior 4 0
Two Years Prior 0 5
Three Years Prior 27 433
Four Years Prior 419 10
Prior 188 104
Revolving Loans 7 43
Recording investment gross of allowance for credit losses $ 647 $ 599