v3.26.1
Investments (Credit Quality Indicators) (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]    
Recording investment gross of allowance for credit losses $ 65,899 $ 65,184
Commercial Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 2,363 7,163
One Years Prior 6,301 7,341
Two Years Prior 7,225 5,172
Three Years Prior 5,089 3,284
Four Years Prior 3,208 5,506
Prior 30,239 25,975
Revolving Loans 58 62
Recording investment gross of allowance for credit losses 54,483 54,503
Commercial Mortgage Loans | ≥ 1.2X    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 2,005 6,602
One Years Prior 5,701 6,779
Two Years Prior 6,781 4,673
Three Years Prior 4,591 2,963
Four Years Prior 2,880 5,333
Prior 27,535 23,384
Revolving Loans 47 45
Recording investment gross of allowance for credit losses 49,540 49,779
Commercial Mortgage Loans | 1.0 - 1.2x    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 358 463
One Years Prior 502 534
Two Years Prior 416 499
Three Years Prior 498 238
Four Years Prior 207 82
Prior 972 885
Revolving Loans 11 17
Recording investment gross of allowance for credit losses 2,964 2,718
Commercial Mortgage Loans | Less than 1.0x    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 0 98
One Years Prior 98 28
Two Years Prior 28 0
Three Years Prior 0 83
Four Years Prior 121 91
Prior 1,732 1,706
Revolving Loans 0 0
Recording investment gross of allowance for credit losses 1,979 2,006
Agricultural property loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 20 893
One Years Prior 898 764
Two Years Prior 759 855
Three Years Prior 850 1,418
Four Years Prior 1,365 1,969
Prior 3,990 2,132
Revolving Loans 223 244
Recording investment gross of allowance for credit losses 8,105 8,275
Agricultural property loans | ≥ 1.2X    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 15 893
One Years Prior 898 741
Two Years Prior 714 799
Three Years Prior 796 741
Four Years Prior 733 1,849
Prior 3,489 1,756
Revolving Loans 180 201
Recording investment gross of allowance for credit losses 6,825 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 26 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 371 334
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 13 612
Four Years Prior 568 58
Prior 266 228
Revolving Loans 43 43
Recording investment gross of allowance for credit losses 909 961
Residential Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 25 1,561
One Years Prior 2,357 57
Two Years Prior 59 0
Three Years Prior 0 0
Four Years Prior 0 0
Prior 13 14
Recording investment gross of allowance for credit losses 2,454 1,632
Performing | Residential Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 25 1,561
One Years Prior 2,355 57
Two Years Prior 59 0
Three Years Prior 0 0
Four Years Prior 0 0
Prior 13 14
Recording investment gross of allowance for credit losses 2,452 1,632
Nonperforming | Residential Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 0 0
One Years Prior 2 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 2 0
0%-59.99% | Commercial Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 520 2,816
One Years Prior 2,367 2,088
Two Years Prior 2,423 2,057
Three Years Prior 1,995 1,270
Four Years Prior 1,198 2,570
Prior 18,296 16,546
Revolving Loans 58 62
Recording investment gross of allowance for credit losses 26,857 27,409
0%-59.99% | Agricultural property loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 20 813
One Years Prior 813 624
Two Years Prior 619 296
Three Years Prior 269 977
Four Years Prior 937 1,944
Prior 3,690 1,927
Revolving Loans 123 143
Recording investment gross of allowance for credit losses 6,471 6,724
60%-69.99% | Commercial Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 1,511 3,670
One Years Prior 3,321 4,506
Two Years Prior 4,175 1,873
Three Years Prior 1,926 1,250
Four Years Prior 1,245 1,581
Prior 4,366 3,048
Revolving Loans 0 0
Recording investment gross of allowance for credit losses 16,544 15,928
60%-69.99% | Agricultural property loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 0 76
One Years Prior 81 140
Two Years Prior 140 554
Three Years Prior 554 8
Four Years Prior 9 15
Prior 113 85
Revolving Loans 57 58
Recording investment gross of allowance for credit losses 954 936
70%-79.99% | Commercial Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 332 677
One Years Prior 613 711
Two Years Prior 591 1,242
Three Years Prior 1,155 506
Four Years Prior 501 901
Prior 2,976 1,948
Revolving Loans 0 0
Recording investment gross of allowance for credit losses 6,168 5,985
70%-79.99% | Agricultural property loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 0 0
One Years Prior 0 0
Two Years Prior 0 0
Three Years Prior 0 0
Four Years Prior 0 0
Prior 0 16
Revolving Loans 0 0
Recording investment gross of allowance for credit losses 0 16
80% or greater | Commercial Mortgage Loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 0 0
One Years Prior 0 36
Two Years Prior 36 0
Three Years Prior 13 258
Four Years Prior 264 454
Prior 4,601 4,433
Revolving Loans 0 0
Recording investment gross of allowance for credit losses 4,914 5,181
80% or greater | Agricultural property loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current Fiscal Year 0 4
One Years Prior 4 0
Two Years Prior 0 5
Three Years Prior 27 433
Four Years Prior 419 10
Prior 187 104
Revolving Loans 43 43
Recording investment gross of allowance for credit losses $ 680 $ 599