Policyholders' Account Balances (Guaranteed Minimum Crediting Rate) (Details) $ in Millions	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 164,088	$ 140,788
1 - 50 bps above guaranteed minimum | Minimum
Policyholder Account Balance [Line Items]
Policyholder account balance above guaranteed minimum crediting rate	1	1
1 - 50 bps above guaranteed minimum | Maximum
Policyholder Account Balance [Line Items]
Policyholder account balance above guaranteed minimum crediting rate	50	50
51 - 150 bps above guaranteed minimum | Minimum
Policyholder Account Balance [Line Items]
Policyholder account balance above guaranteed minimum crediting rate	51	51
51 - 150 bps above guaranteed minimum | Maximum
Policyholder Account Balance [Line Items]
Policyholder account balance above guaranteed minimum crediting rate	150	150
Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Policyholder account balance above guaranteed minimum crediting rate	150	150
Institutional
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 9,950	$ 9,964
Institutional | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	9,950	9,964
Institutional | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Institutional | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Institutional | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Individual Variable
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	3,655	4,211
Individual Variable | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	2,351	3,343
Individual Variable | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	842	836
Individual Variable | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	462	32
Individual Variable | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Individual Fixed
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	5,168	2,806
Individual Fixed | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	2,669	1,519
Individual Fixed | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	631	607
Individual Fixed | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	806	566
Individual Fixed | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	1,062	114
Group Insurance
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	2,570	2,888
Group Insurance | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	1,541	1,667
Group Insurance | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Group Insurance | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Group Insurance | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	1,029	1,221
Variable Universal Life
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	23,799	24,270
Variable Universal Life | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	9,943	10,225
Variable Universal Life | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	5,316	5,607
Variable Universal Life | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	5,870	6,783
Variable Universal Life | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	2,670	1,655
Life Planner
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	9,057	7,460
Life Planner | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	6,094	5,863
Life Planner | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	72	67
Life Planner | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	82	90
Life Planner | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	2,809	1,440
Gibraltar Life and Other
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	41,246	36,054
Gibraltar Life and Other | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	40,861	35,706
Gibraltar Life and Other | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	354	310
Gibraltar Life and Other | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	31	38
Gibraltar Life and Other | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0
Less than 1.00% | Institutional
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
Account Values with Crediting Rates	$ 400	$ 400
Less than 1.00% | Institutional | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	400	400
Less than 1.00% | Institutional | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Less than 1.00% | Institutional | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Less than 1.00% | Institutional | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0
Less than 1.00% | Individual Variable
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
Account Values with Crediting Rates	$ 1,393	$ 1,783
Less than 1.00% | Individual Variable | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	324	944
Less than 1.00% | Individual Variable | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	622	821
Less than 1.00% | Individual Variable | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	447	18
Less than 1.00% | Individual Variable | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0
Less than 1.00% | Individual Fixed
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
Account Values with Crediting Rates	$ 980	$ 20
Less than 1.00% | Individual Fixed | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Less than 1.00% | Individual Fixed | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	3	0
Less than 1.00% | Individual Fixed | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	10	0
Less than 1.00% | Individual Fixed | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 967	$ 20
Less than 1.00% | Group Insurance
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
Account Values with Crediting Rates	$ 966	$ 1,221
Less than 1.00% | Group Insurance | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Less than 1.00% | Group Insurance | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Less than 1.00% | Group Insurance | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Less than 1.00% | Group Insurance | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 966	$ 1,221
Less than 1.00% | Variable Universal Life
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
Account Values with Crediting Rates	$ 309	$ 408
Less than 1.00% | Variable Universal Life | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Less than 1.00% | Variable Universal Life | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Less than 1.00% | Variable Universal Life | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Less than 1.00% | Variable Universal Life | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 309	$ 408
Less than 1.00% | Life Planner
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
Account Values with Crediting Rates	$ 3,249	$ 1,892
Less than 1.00% | Life Planner | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	315	320
Less than 1.00% | Life Planner | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	43	42
Less than 1.00% | Life Planner | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	82	90
Less than 1.00% | Life Planner | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 2,809	$ 1,440
Less than 1.00% | Gibraltar Life and Other
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
Account Values with Crediting Rates	$ 15,688	$ 15,671
Less than 1.00% | Gibraltar Life and Other | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	15,688	15,671
Less than 1.00% | Gibraltar Life and Other | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Less than 1.00% | Gibraltar Life and Other | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Less than 1.00% | Gibraltar Life and Other | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
1.00% - 1.99% | Institutional
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 1,551	$ 1,551
1.00% - 1.99% | Institutional | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
1.00% - 1.99% | Institutional | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.99%	1.99%
1.00% - 1.99% | Institutional | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 1,551	$ 1,551
1.00% - 1.99% | Institutional | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
1.00% - 1.99% | Institutional | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
1.00% - 1.99% | Institutional | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
1.00% - 1.99% | Individual Variable
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 370	$ 227
1.00% - 1.99% | Individual Variable | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
1.00% - 1.99% | Individual Variable | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.99%	1.99%
1.00% - 1.99% | Individual Variable | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 156	$ 224
1.00% - 1.99% | Individual Variable | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	211	2
1.00% - 1.99% | Individual Variable | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	3	1
1.00% - 1.99% | Individual Variable | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
1.00% - 1.99% | Individual Fixed
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 857	$ 1,001
1.00% - 1.99% | Individual Fixed | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
1.00% - 1.99% | Individual Fixed | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.99%	1.99%
1.00% - 1.99% | Individual Fixed | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 474	$ 544
1.00% - 1.99% | Individual Fixed | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	82	129
1.00% - 1.99% | Individual Fixed | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	226	246
1.00% - 1.99% | Individual Fixed | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	75	82
1.00% - 1.99% | Group Insurance
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0
1.00% - 1.99% | Group Insurance | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
1.00% - 1.99% | Group Insurance | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.99%	1.99%
1.00% - 1.99% | Group Insurance | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0
1.00% - 1.99% | Group Insurance | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
1.00% - 1.99% | Group Insurance | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
1.00% - 1.99% | Group Insurance | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
1.00% - 1.99% | Variable Universal Life
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 3,829	$ 3,597
1.00% - 1.99% | Variable Universal Life | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
1.00% - 1.99% | Variable Universal Life | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.99%	1.99%
1.00% - 1.99% | Variable Universal Life | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 262	$ 185
1.00% - 1.99% | Variable Universal Life | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
1.00% - 1.99% | Variable Universal Life | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	1,692	2,528
1.00% - 1.99% | Variable Universal Life | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	1,875	884
1.00% - 1.99% | Life Planner
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 2,933	$ 2,840
1.00% - 1.99% | Life Planner | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
1.00% - 1.99% | Life Planner | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.99%	1.99%
1.00% - 1.99% | Life Planner | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 2,904	$ 2,815
1.00% - 1.99% | Life Planner | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	29	25
1.00% - 1.99% | Life Planner | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
1.00% - 1.99% | Life Planner | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
1.00% - 1.99% | Gibraltar Life and Other
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 8,479	$ 8,864
1.00% - 1.99% | Gibraltar Life and Other | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.00%	1.00%
1.00% - 1.99% | Gibraltar Life and Other | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	1.99%	1.99%
1.00% - 1.99% | Gibraltar Life and Other | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 8,425	$ 8,864
1.00% - 1.99% | Gibraltar Life and Other | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	54	0
1.00% - 1.99% | Gibraltar Life and Other | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
1.00% - 1.99% | Gibraltar Life and Other | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
2.00% - 2.99% | Institutional
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 83	$ 551
2.00% - 2.99% | Institutional | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.00%	2.00%
2.00% - 2.99% | Institutional | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.99%	2.99%
2.00% - 2.99% | Institutional | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 83	$ 551
2.00% - 2.99% | Institutional | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
2.00% - 2.99% | Institutional | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
2.00% - 2.99% | Institutional | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
2.00% - 2.99% | Individual Variable
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 31	$ 40
2.00% - 2.99% | Individual Variable | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.00%	2.00%
2.00% - 2.99% | Individual Variable | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.99%	2.99%
2.00% - 2.99% | Individual Variable | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 23	$ 32
2.00% - 2.99% | Individual Variable | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	4	5
2.00% - 2.99% | Individual Variable | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	4	3
2.00% - 2.99% | Individual Variable | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
2.00% - 2.99% | Individual Fixed
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 1,585	$ 1,336
2.00% - 2.99% | Individual Fixed | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.00%	2.00%
2.00% - 2.99% | Individual Fixed | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.99%	2.99%
2.00% - 2.99% | Individual Fixed | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 545	$ 535
2.00% - 2.99% | Individual Fixed | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	463	469
2.00% - 2.99% | Individual Fixed | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	560	320
2.00% - 2.99% | Individual Fixed | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	17	12
2.00% - 2.99% | Group Insurance
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 41	$ 29
2.00% - 2.99% | Group Insurance | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.00%	2.00%
2.00% - 2.99% | Group Insurance | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.99%	2.99%
2.00% - 2.99% | Group Insurance | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 41	$ 29
2.00% - 2.99% | Group Insurance | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
2.00% - 2.99% | Group Insurance | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
2.00% - 2.99% | Group Insurance | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
2.00% - 2.99% | Variable Universal Life
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 4,823	$ 4,736
2.00% - 2.99% | Variable Universal Life | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.00%	2.00%
2.00% - 2.99% | Variable Universal Life | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.99%	2.99%
2.00% - 2.99% | Variable Universal Life | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 31	$ 29
2.00% - 2.99% | Variable Universal Life | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	1,505	1,418
2.00% - 2.99% | Variable Universal Life | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	2,834	2,940
2.00% - 2.99% | Variable Universal Life | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	453	349
2.00% - 2.99% | Life Planner
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 2,085	$ 2,013
2.00% - 2.99% | Life Planner | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.00%	2.00%
2.00% - 2.99% | Life Planner | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.99%	2.99%
2.00% - 2.99% | Life Planner | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 2,085	$ 2,013
2.00% - 2.99% | Life Planner | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
2.00% - 2.99% | Life Planner | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
2.00% - 2.99% | Life Planner | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
2.00% - 2.99% | Gibraltar Life and Other
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 3,116	$ 3,501
2.00% - 2.99% | Gibraltar Life and Other | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.00%	2.00%
2.00% - 2.99% | Gibraltar Life and Other | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	2.99%	2.99%
2.00% - 2.99% | Gibraltar Life and Other | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 2,785	$ 3,153
2.00% - 2.99% | Gibraltar Life and Other | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	300	310
2.00% - 2.99% | Gibraltar Life and Other | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	31	38
2.00% - 2.99% | Gibraltar Life and Other | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
3.00% - 4.00% | Institutional
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 4,715	$ 5,312
3.00% - 4.00% | Institutional | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	3.00%	3.00%
3.00% - 4.00% | Institutional | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
3.00% - 4.00% | Institutional | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 4,715	$ 5,312
3.00% - 4.00% | Institutional | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
3.00% - 4.00% | Institutional | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
3.00% - 4.00% | Institutional | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
3.00% - 4.00% | Individual Variable
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 1,776	$ 2,064
3.00% - 4.00% | Individual Variable | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	3.00%	3.00%
3.00% - 4.00% | Individual Variable | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
3.00% - 4.00% | Individual Variable | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 1,763	$ 2,046
3.00% - 4.00% | Individual Variable | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	5	8
3.00% - 4.00% | Individual Variable | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	8	10
3.00% - 4.00% | Individual Variable | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
3.00% - 4.00% | Individual Fixed
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 1,661	$ 352
3.00% - 4.00% | Individual Fixed | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	3.00%	3.00%
3.00% - 4.00% | Individual Fixed | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
3.00% - 4.00% | Individual Fixed | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 1,565	$ 343
3.00% - 4.00% | Individual Fixed | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	83	9
3.00% - 4.00% | Individual Fixed | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	10	0
3.00% - 4.00% | Individual Fixed | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	3	0
3.00% - 4.00% | Group Insurance
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 1,495	$ 1,565
3.00% - 4.00% | Group Insurance | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	3.00%	3.00%
3.00% - 4.00% | Group Insurance | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
3.00% - 4.00% | Group Insurance | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 1,432	$ 1,565
3.00% - 4.00% | Group Insurance | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
3.00% - 4.00% | Group Insurance | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
3.00% - 4.00% | Group Insurance | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	63	0
3.00% - 4.00% | Variable Universal Life
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 9,432	$ 9,996
3.00% - 4.00% | Variable Universal Life | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	3.00%	3.00%
3.00% - 4.00% | Variable Universal Life | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
3.00% - 4.00% | Variable Universal Life | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 4,244	$ 4,478
3.00% - 4.00% | Variable Universal Life | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	3,811	4,189
3.00% - 4.00% | Variable Universal Life | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	1,344	1,315
3.00% - 4.00% | Variable Universal Life | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	33	14
3.00% - 4.00% | Life Planner
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 380	$ 335
3.00% - 4.00% | Life Planner | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	3.00%	3.00%
3.00% - 4.00% | Life Planner | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
3.00% - 4.00% | Life Planner | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 380	$ 335
3.00% - 4.00% | Life Planner | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
3.00% - 4.00% | Life Planner | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
3.00% - 4.00% | Life Planner | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
3.00% - 4.00% | Gibraltar Life and Other
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 5,962	$ 4,145
3.00% - 4.00% | Gibraltar Life and Other | Minimum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	3.00%	3.00%
3.00% - 4.00% | Gibraltar Life and Other | Maximum
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
3.00% - 4.00% | Gibraltar Life and Other | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 5,962	$ 4,145
3.00% - 4.00% | Gibraltar Life and Other | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
3.00% - 4.00% | Gibraltar Life and Other | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
3.00% - 4.00% | Gibraltar Life and Other | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0
Greater than 4.00% | Institutional
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
Account Values with Crediting Rates	$ 3,201	$ 2,150
Greater than 4.00% | Institutional | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	3,201	2,150
Greater than 4.00% | Institutional | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Institutional | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Institutional | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0
Greater than 4.00% | Individual Variable
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
Account Values with Crediting Rates	$ 85	$ 97
Greater than 4.00% | Individual Variable | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	85	97
Greater than 4.00% | Individual Variable | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Individual Variable | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Individual Variable | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0
Greater than 4.00% | Individual Fixed
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
Account Values with Crediting Rates	$ 85	$ 97
Greater than 4.00% | Individual Fixed | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	85	97
Greater than 4.00% | Individual Fixed | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Individual Fixed | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Individual Fixed | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0
Greater than 4.00% | Group Insurance
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
Account Values with Crediting Rates	$ 68	$ 73
Greater than 4.00% | Group Insurance | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	68	73
Greater than 4.00% | Group Insurance | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Group Insurance | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Group Insurance | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0
Greater than 4.00% | Variable Universal Life
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
Account Values with Crediting Rates	$ 5,406	$ 5,533
Greater than 4.00% | Variable Universal Life | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	5,406	5,533
Greater than 4.00% | Variable Universal Life | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Variable Universal Life | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Variable Universal Life | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0
Greater than 4.00% | Life Planner
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
Account Values with Crediting Rates	$ 410	$ 380
Greater than 4.00% | Life Planner | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	410	380
Greater than 4.00% | Life Planner | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Life Planner | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Life Planner | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0
Greater than 4.00% | Gibraltar Life and Other
Policyholder Account Balance [Line Items]
Range of Guaranteed Minimum Crediting Rates	4.00%	4.00%
Account Values with Crediting Rates	$ 8,001	$ 3,873
Greater than 4.00% | Gibraltar Life and Other | At guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	8,001	3,873
Greater than 4.00% | Gibraltar Life and Other | 1 - 50 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Gibraltar Life and Other | 51 - 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	0	0
Greater than 4.00% | Gibraltar Life and Other | Greater than 150 bps above guaranteed minimum
Policyholder Account Balance [Line Items]
Account Values with Crediting Rates	$ 0	$ 0