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INVESTMENTS - Credit Quality (Details) - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | $ 15,771 | $ 14,095
Total | 15,755 | 14,079
Non-accruing Loans | 16 | 16
Non-accruing Loans with No Allowance | 0 | 0
Interest Income on Non-accruing Loans | 0 | 0
Past Due |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 38 | 27
30-59 Days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 12 | 1
60-89 Days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 7 | 1
90 Days Or Greater |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 19 | 25
Current |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 15,717 | 14,052
Commercial mortgage loans |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 2,404 | 2,134
Fiscal year before current fiscal year | 2,111 | 1,522
Two years before current fiscal year | 1,370 | 751
Three years before current fiscal year | 643 | 1,253
Four years before current fiscal year | 1,202 | 1,065
Prior | 5,138 | 4,587
Revolving Loans Amortized Cost Basis | 273 | 139
Revolving Loans Converted to Term Loans Amortized Cost Basis | 33 | 0
Total | 13,174 | 11,451
Total | 13,174 | 11,451
Non-accruing Loans | 0 | 0
Non-accruing Loans with No Allowance | 0 | 0
Interest Income on Non-accruing Loans | 0 | 0
Commercial mortgage loans | Past Due |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 0 | 0
Commercial mortgage loans | 30-59 Days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 0 | 0
Commercial mortgage loans | 60-89 Days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 0 | 0
Commercial mortgage loans | 90 Days Or Greater |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 0 | 0
Commercial mortgage loans | Current |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 13,174 | 11,451
Commercial mortgage loans | Greater than 2.0x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 605 | 1,143
Fiscal year before current fiscal year | 1,143 | 1,243
Two years before current fiscal year | 1,078 | 210
Three years before current fiscal year | 103 | 772
Four years before current fiscal year | 571 | 485
Prior | 1,863 | 2,235
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 5,363 | 6,088
Commercial mortgage loans | 1.8x to 2.0x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 135 | 185
Fiscal year before current fiscal year | 187 | 135
Two years before current fiscal year | 165 | 182
Three years before current fiscal year | 216 | 46
Four years before current fiscal year | 186 | 161
Prior | 421 | 372
Revolving Loans Amortized Cost Basis | 161 | 68
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 1,471 | 1,149
Commercial mortgage loans | 1.5x to 1.8x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 413 | 275
Fiscal year before current fiscal year | 274 | 49
Two years before current fiscal year | 32 | 284
Three years before current fiscal year | 177 | 211
Four years before current fiscal year | 250 | 166
Prior | 1,173 | 919
Revolving Loans Amortized Cost Basis | 75 | 48
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 2,394 | 1,952
Commercial mortgage loans | 1.2x to 1.5x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 614 | 264
Fiscal year before current fiscal year | 259 | 95
Two years before current fiscal year | 60 | 75
Three years before current fiscal year | 92 | 101
Four years before current fiscal year | 47 | 253
Prior | 1,376 | 701
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 2,448 | 1,489
Commercial mortgage loans | 1.0x to 1.2x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 222 | 267
Fiscal year before current fiscal year | 248 | 0
Two years before current fiscal year | 35 | 0
Three years before current fiscal year | 55 | 88
Four years before current fiscal year | 148 | 0
Prior | 234 | 287
Revolving Loans Amortized Cost Basis | 37 | 23
Revolving Loans Converted to Term Loans Amortized Cost Basis | 33 | 0
Total | 1,012 | 665
Commercial mortgage loans | Less than 1.0x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 415 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 35
Four years before current fiscal year | 0 | 0
Prior | 71 | 73
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 486 | 108
Commercial mortgage loans | 0% - 50% |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 488 | 0
Fiscal year before current fiscal year | 130 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 184
Four years before current fiscal year | 119 | 293
Prior | 1,469 | 1,009
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 2,206 | 1,486
Commercial mortgage loans | 50% - 70% |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 1,780 | 1,944
Fiscal year before current fiscal year | 1,857 | 1,286
Two years before current fiscal year | 1,255 | 339
Three years before current fiscal year | 275 | 619
Four years before current fiscal year | 733 | 491
Prior | 2,597 | 2,533
Revolving Loans Amortized Cost Basis | 273 | 139
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 8,770 | 7,351
Commercial mortgage loans | 70% - 90% |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 136 | 190
Fiscal year before current fiscal year | 124 | 236
Two years before current fiscal year | 115 | 412
Three years before current fiscal year | 368 | 415
Four years before current fiscal year | 315 | 276
Prior | 898 | 972
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 33 | 0
Total | 1,989 | 2,501
Commercial mortgage loans | 90% plus |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 35
Four years before current fiscal year | 35 | 5
Prior | 174 | 73
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 209 | 113
Agricultural mortgage loans |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 304 | 380
Fiscal year before current fiscal year | 369 | 480
Two years before current fiscal year | 452 | 230
Three years before current fiscal year | 209 | 255
Four years before current fiscal year | 217 | 206
Prior | 1,046 | 1,093
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 2,597 | 2,644
Total | 2,581 | 2,628
Non-accruing Loans | 16 | 16
Non-accruing Loans with No Allowance | 0 | 0
Interest Income on Non-accruing Loans | 0 | 0
Agricultural mortgage loans | Past Due |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 38 | 27
Agricultural mortgage loans | 30-59 Days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 12 | 1
Agricultural mortgage loans | 60-89 Days |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 7 | 1
Agricultural mortgage loans | 90 Days Or Greater |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 19 | 25
Agricultural mortgage loans | Current |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Total | 2,543 | 2,601
Agricultural mortgage loans | Greater than 2.0x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 48 | 49
Fiscal year before current fiscal year | 40 | 64
Two years before current fiscal year | 62 | 25
Three years before current fiscal year | 22 | 22
Four years before current fiscal year | 12 | 24
Prior | 195 | 210
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 379 | 394
Agricultural mortgage loans | 1.8x to 2.0x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 17 | 52
Fiscal year before current fiscal year | 58 | 37
Two years before current fiscal year | 35 | 25
Three years before current fiscal year | 24 | 14
Four years before current fiscal year | 14 | 14
Prior | 63 | 70
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 211 | 212
Agricultural mortgage loans | 1.5x to 1.8x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 48 | 43
Fiscal year before current fiscal year | 42 | 113
Two years before current fiscal year | 112 | 28
Three years before current fiscal year | 28 | 22
Four years before current fiscal year | 19 | 41
Prior | 202 | 193
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 451 | 440
Agricultural mortgage loans | 1.2x to 1.5x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 89 | 161
Fiscal year before current fiscal year | 154 | 179
Two years before current fiscal year | 174 | 112
Three years before current fiscal year | 99 | 116
Four years before current fiscal year | 100 | 72
Prior | 313 | 355
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 929 | 995
Agricultural mortgage loans | 1.0x to 1.2x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 86 | 75
Fiscal year before current fiscal year | 74 | 83
Two years before current fiscal year | 65 | 31
Three years before current fiscal year | 30 | 77
Four years before current fiscal year | 66 | 54
Prior | 260 | 226
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 581 | 546
Agricultural mortgage loans | Less than 1.0x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 16 | 0
Fiscal year before current fiscal year | 1 | 4
Two years before current fiscal year | 4 | 9
Three years before current fiscal year | 6 | 4
Four years before current fiscal year | 6 | 1
Prior | 13 | 39
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 46 | 57
Agricultural mortgage loans | 0% - 50% |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 121 | 180
Fiscal year before current fiscal year | 190 | 212
Two years before current fiscal year | 214 | 128
Three years before current fiscal year | 123 | 129
Four years before current fiscal year | 135 | 119
Prior | 754 | 738
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 1,537 | 1,506
Agricultural mortgage loans | 50% - 70% |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 182 | 200
Fiscal year before current fiscal year | 179 | 268
Two years before current fiscal year | 238 | 102
Three years before current fiscal year | 86 | 126
Four years before current fiscal year | 82 | 87
Prior | 277 | 338
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 1,044 | 1,121
Agricultural mortgage loans | 70% - 90% |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 1 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Prior | 15 | 17
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 16 | 17
Agricultural mortgage loans | 90% plus |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 0 | 0
Mortgages Loan |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 2,708 | 2,514
Fiscal year before current fiscal year | 2,480 | 2,002
Two years before current fiscal year | 1,822 | 981
Three years before current fiscal year | 852 | 1,508
Four years before current fiscal year | 1,419 | 1,271
Prior | 6,184 | 5,680
Revolving Loans Amortized Cost Basis | 273 | 139
Revolving Loans Converted to Term Loans Amortized Cost Basis | 33 | 0
Total | 15,771 | 14,095
Mortgages Loan | Greater than 2.0x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 653 | 1,192
Fiscal year before current fiscal year | 1,183 | 1,307
Two years before current fiscal year | 1,140 | 235
Three years before current fiscal year | 125 | 794
Four years before current fiscal year | 583 | 509
Prior | 2,058 | 2,445
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 5,742 | 6,482
Mortgages Loan | 1.8x to 2.0x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 152 | 237
Fiscal year before current fiscal year | 245 | 172
Two years before current fiscal year | 200 | 207
Three years before current fiscal year | 240 | 60
Four years before current fiscal year | 200 | 175
Prior | 484 | 442
Revolving Loans Amortized Cost Basis | 161 | 68
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 1,682 | 1,361
Mortgages Loan | 1.5x to 1.8x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 461 | 318
Fiscal year before current fiscal year | 316 | 162
Two years before current fiscal year | 144 | 312
Three years before current fiscal year | 205 | 233
Four years before current fiscal year | 269 | 207
Prior | 1,375 | 1,112
Revolving Loans Amortized Cost Basis | 75 | 48
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 2,845 | 2,392
Mortgages Loan | 1.2x to 1.5x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 703 | 425
Fiscal year before current fiscal year | 413 | 274
Two years before current fiscal year | 234 | 187
Three years before current fiscal year | 191 | 217
Four years before current fiscal year | 147 | 325
Prior | 1,689 | 1,056
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 3,377 | 2,484
Mortgages Loan | 1.0x to 1.2x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 308 | 342
Fiscal year before current fiscal year | 322 | 83
Two years before current fiscal year | 100 | 31
Three years before current fiscal year | 85 | 165
Four years before current fiscal year | 214 | 54
Prior | 494 | 513
Revolving Loans Amortized Cost Basis | 37 | 23
Revolving Loans Converted to Term Loans Amortized Cost Basis | 33 | 0
Total | 1,593 | 1,211
Mortgages Loan | Less than 1.0x |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 431 | 0
Fiscal year before current fiscal year | 1 | 4
Two years before current fiscal year | 4 | 9
Three years before current fiscal year | 6 | 39
Four years before current fiscal year | 6 | 1
Prior | 84 | 112
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 532 | 165
Mortgages Loan | 0% - 50% |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 609 | 180
Fiscal year before current fiscal year | 320 | 212
Two years before current fiscal year | 214 | 128
Three years before current fiscal year | 123 | 313
Four years before current fiscal year | 254 | 412
Prior | 2,223 | 1,747
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 3,743 | 2,992
Mortgages Loan | 50% - 70% |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 1,962 | 2,144
Fiscal year before current fiscal year | 2,036 | 1,554
Two years before current fiscal year | 1,493 | 441
Three years before current fiscal year | 361 | 745
Four years before current fiscal year | 815 | 578
Prior | 2,874 | 2,871
Revolving Loans Amortized Cost Basis | 273 | 139
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 9,814 | 8,472
Mortgages Loan | 70% - 90% |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 137 | 190
Fiscal year before current fiscal year | 124 | 236
Two years before current fiscal year | 115 | 412
Three years before current fiscal year | 368 | 415
Four years before current fiscal year | 315 | 276
Prior | 913 | 989
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 33 | 0
Total | 2,005 | 2,518
Mortgages Loan | 90% plus |  |
Financing Receivable, before Allowance for Credit Loss [Abstract] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 35
Four years before current fiscal year | 35 | 5
Prior | 174 | 73
Revolving Loans Amortized Cost Basis | 0 | 0
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | $ 209 | $ 113

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