INVESTMENTS - Credit Quality (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Commercial Mortgage Loans
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	$ 1,025
2019	805
2018	1,265
2017	1,204
2016	2,755
Prior	3,048
Total	10,102	$ 9,373
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Current	10,102	9,373
Total	10,102	9,373
Non-accruing Loans	0	0
Total	10,102	9,373
Non-accruing Loans with No allowance	0	0
Interest Income on Non-accruing Loans	0	0
Commercial Mortgage Loans | 30-59 Days
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Commercial Mortgage Loans | 60-89 Days
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Commercial Mortgage Loans | 90 Days Or Greater
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	0	0
Commercial Mortgage Loans | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	749
2019	492
2018	772
2017	268
2016	2,036
Prior	1,268
Total	5,585	5,235
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	5,585	5,235
Commercial Mortgage Loans | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	227
2019	77
2018	118
2017	378
2016	184
Prior	524
Total	1,508	1,331
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,508	1,331
Commercial Mortgage Loans | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	49
2019	138
2018	186
2017	480
2016	437
Prior	569
Total	1,859	1,546
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,859	1,546
Commercial Mortgage Loans | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	0
2019	56
2018	154
2017	78
2016	97
Prior	533
Total	918	973
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	918	973
Commercial Mortgage Loans | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	0
2019	42
2018	35
2017	0
2016	1
Prior	82
Total	160	288
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	160	288
Commercial Mortgage Loans | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	72
Total	72	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	72	0
Commercial Mortgage Loans | 0% - 50%
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	0
2019	0
2018	0
2017	324
2016	170
Prior	650
Total	1,144	1,163
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,144	1,163
Commercial Mortgage Loans | 0% - 50% | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	935	887
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	935	887
Commercial Mortgage Loans | 0% - 50% | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	38
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	38
Commercial Mortgage Loans | 0% - 50% | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	185	214
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	185	214
Commercial Mortgage Loans | 0% - 50% | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	24	24
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	24	24
Commercial Mortgage Loans | 0% - 50% | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Commercial Mortgage Loans | 0% - 50% | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Commercial Mortgage Loans | 50% - 70%
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	935
2019	411
2018	885
2017	760
2016	2,432
Prior	1,608
Total	7,031	7,447
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	7,031	7,447
Commercial Mortgage Loans | 50% - 70% | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	3,992	4,097
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	3,992	4,097
Commercial Mortgage Loans | 50% - 70% | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	1,160	1,195
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,160	1,195
Commercial Mortgage Loans | 50% - 70% | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	1,342	1,118
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,342	1,118
Commercial Mortgage Loans | 50% - 70% | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	511	795
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	511	795
Commercial Mortgage Loans | 50% - 70% | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	26	242
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	26	242
Commercial Mortgage Loans | 50% - 70% | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Commercial Mortgage Loans | 70% - 90%
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	90
2019	394
2018	368
2017	115
2016	153
Prior	574
Total	1,694	763
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,694	763
Commercial Mortgage Loans | 70% - 90% | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	574	251
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	574	251
Commercial Mortgage Loans | 70% - 90% | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	348	98
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	348	98
Commercial Mortgage Loans | 70% - 90% | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	332	214
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	332	214
Commercial Mortgage Loans | 70% - 90% | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	306	154
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	306	154
Commercial Mortgage Loans | 70% - 90% | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	134	46
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	134	46
Commercial Mortgage Loans | 70% - 90% | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Commercial Mortgage Loans | 90% plus
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	0
2019	0
2018	12
2017	5
2016	0
Prior	216
Total	233	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	233	0
Commercial Mortgage Loans | 90% plus | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	84	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	84	0
Commercial Mortgage Loans | 90% plus | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Commercial Mortgage Loans | 90% plus | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Commercial Mortgage Loans | 90% plus | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	77	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	77	0
Commercial Mortgage Loans | 90% plus | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Commercial Mortgage Loans | 90% plus | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	72	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	72	0
Agricultural Mortgage Loans
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	434
2019	268
2018	343
2017	271
2016	368
Prior	1,069
Total	2,753	2,717
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	165	124
Current	2,588	2,593
Total	2,753	2,717
Non-accruing Loans	0	0
Total	2,753	2,717
Non-accruing Loans with No allowance	0	0
Interest Income on Non-accruing Loans	0	0
Agricultural Mortgage Loans | 30-59 Days
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	24	57
Agricultural Mortgage Loans | 60-89 Days
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	6	1
Agricultural Mortgage Loans | 90 Days Or Greater
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	135	66
Agricultural Mortgage Loans | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	52
2019	27
2018	39
2017	38
2016	73
Prior	158
Total	387	404
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	387	404
Agricultural Mortgage Loans | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	33
2019	36
2018	14
2017	15
2016	21
Prior	90
Total	209	191
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	209	191
Agricultural Mortgage Loans | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	103
2019	38
2018	45
2017	41
2016	52
Prior	212
Total	491	477
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	491	477
Agricultural Mortgage Loans | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	165
2019	118
2018	146
2017	105
2016	147
Prior	327
Total	1,008	990
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,008	990
Agricultural Mortgage Loans | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	77
2019	39
2018	91
2017	71
2016	57
Prior	265
Total	600	572
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	600	572
Agricultural Mortgage Loans | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	4
2019	10
2018	8
2017	1
2016	18
Prior	17
Total	58	83
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	58	83
Agricultural Mortgage Loans | 0% - 50%
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	181
2019	137
2018	168
2017	161
2016	232
Prior	679
Total	1,558	1,583
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,558	1,583
Agricultural Mortgage Loans | 0% - 50% | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	283	322
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	283	322
Agricultural Mortgage Loans | 0% - 50% | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	107	104
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	107	104
Agricultural Mortgage Loans | 0% - 50% | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	271	241
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	271	241
Agricultural Mortgage Loans | 0% - 50% | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	529	545
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	529	545
Agricultural Mortgage Loans | 0% - 50% | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	335	321
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	335	321
Agricultural Mortgage Loans | 0% - 50% | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	33	50
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	33	50
Agricultural Mortgage Loans | 50% - 70%
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	253
2019	131
2018	172
2017	110
2016	136
Prior	372
Total	1,174	1,115
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,174	1,115
Agricultural Mortgage Loans | 50% - 70% | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	104	82
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	104	82
Agricultural Mortgage Loans | 50% - 70% | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	100	87
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	100	87
Agricultural Mortgage Loans | 50% - 70% | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	220	236
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	220	236
Agricultural Mortgage Loans | 50% - 70% | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	460	426
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	460	426
Agricultural Mortgage Loans | 50% - 70% | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	265	251
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	265	251
Agricultural Mortgage Loans | 50% - 70% | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	25	33
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	25	33
Agricultural Mortgage Loans | 70% - 90%
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	0
2019	0
2018	3
2017	0
2016	0
Prior	18
Total	21	19
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	21	19
Agricultural Mortgage Loans | 70% - 90% | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Agricultural Mortgage Loans | 70% - 90% | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	2	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	2	0
Agricultural Mortgage Loans | 70% - 90% | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Agricultural Mortgage Loans | 70% - 90% | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	19	19
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	19	19
Agricultural Mortgage Loans | 70% - 90% | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Agricultural Mortgage Loans | 70% - 90% | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Agricultural Mortgage Loans | 90% plus
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Agricultural Mortgage Loans | 90% plus | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Agricultural Mortgage Loans | 90% plus | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Agricultural Mortgage Loans | 90% plus | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Agricultural Mortgage Loans | 90% plus | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Agricultural Mortgage Loans | 90% plus | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Agricultural Mortgage Loans | 90% plus | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Total Mortgages Loan
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	1,459
2019	1,073
2018	1,608
2017	1,475
2016	3,123
Prior	4,117
Total	12,855	12,090
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	165	124
Current	12,690	11,966
Total	12,855	12,090
Non-accruing Loans	0	0
Total	12,855	12,090
Non-accruing Loans with No allowance	0	0
Interest Income on Non-accruing Loans	0	0
Total Mortgages Loan | 30-59 Days
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	24	57
Total Mortgages Loan | 60-89 Days
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	6	1
Total Mortgages Loan | 90 Days Or Greater
Financing Receivable, Recorded Investment, Aging [Abstract]
Total Past Due	135	66
Total Mortgages Loan | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	801
2019	519
2018	811
2017	306
2016	2,109
Prior	1,426
Total	5,972	5,639
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	5,972	5,639
Total Mortgages Loan | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	260
2019	113
2018	132
2017	393
2016	205
Prior	614
Total	1,717	1,522
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,717	1,522
Total Mortgages Loan | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	152
2019	176
2018	231
2017	521
2016	489
Prior	781
Total	2,350	2,023
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	2,350	2,023
Total Mortgages Loan | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	165
2019	174
2018	300
2017	183
2016	244
Prior	860
Total	1,926	1,963
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,926	1,963
Total Mortgages Loan | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	77
2019	81
2018	126
2017	71
2016	58
Prior	347
Total	760	860
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	760	860
Total Mortgages Loan | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	4
2019	10
2018	8
2017	1
2016	18
Prior	89
Total	130	83
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	130	83
Total Mortgages Loan | 0% - 50%
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	181
2019	137
2018	168
2017	485
2016	402
Prior	1,329
Total	2,702	2,746
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	2,702	2,746
Total Mortgages Loan | 0% - 50% | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	1,218	1,209
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,218	1,209
Total Mortgages Loan | 0% - 50% | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	107	142
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	107	142
Total Mortgages Loan | 0% - 50% | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	456	455
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	456	455
Total Mortgages Loan | 0% - 50% | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	553	569
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	553	569
Total Mortgages Loan | 0% - 50% | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	335	321
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	335	321
Total Mortgages Loan | 0% - 50% | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	33	50
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	33	50
Total Mortgages Loan | 50% - 70%
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	1,188
2019	542
2018	1,057
2017	870
2016	2,568
Prior	1,980
Total	8,205	8,562
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	8,205	8,562
Total Mortgages Loan | 50% - 70% | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	4,096	4,179
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	4,096	4,179
Total Mortgages Loan | 50% - 70% | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	1,260	1,282
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,260	1,282
Total Mortgages Loan | 50% - 70% | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	1,562	1,354
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,562	1,354
Total Mortgages Loan | 50% - 70% | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	971	1,221
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	971	1,221
Total Mortgages Loan | 50% - 70% | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	291	493
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	291	493
Total Mortgages Loan | 50% - 70% | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	25	33
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	25	33
Total Mortgages Loan | 70% - 90%
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	90
2019	394
2018	371
2017	115
2016	153
Prior	592
Total	1,715	782
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	1,715	782
Total Mortgages Loan | 70% - 90% | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	574	251
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	574	251
Total Mortgages Loan | 70% - 90% | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	350	98
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	350	98
Total Mortgages Loan | 70% - 90% | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	332	214
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	332	214
Total Mortgages Loan | 70% - 90% | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	325	173
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	325	173
Total Mortgages Loan | 70% - 90% | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	134	46
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	134	46
Total Mortgages Loan | 70% - 90% | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Total Mortgages Loan | 90% plus
Financing Receivable, before Allowance for Credit Loss [Abstract]
2020	0
2019	0
2018	12
2017	5
2016	0
Prior	216
Total	233	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	233	0
Total Mortgages Loan | 90% plus | Greater than 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	84	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	84	0
Total Mortgages Loan | 90% plus | 1.8x to 2.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Total Mortgages Loan | 90% plus | 1.5x to 1.8x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Total Mortgages Loan | 90% plus | 1.2x to 1.5x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	77	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	77	0
Total Mortgages Loan | 90% plus | 1.0x to 1.2x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	0	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	0	0
Total Mortgages Loan | 90% plus | Less than 1.0x
Financing Receivable, before Allowance for Credit Loss [Abstract]
Total	72	0
Financing Receivable, Recorded Investment, Aging [Abstract]
Total	$ 72	$ 0