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Policyholder Account Balance, Guaranteed Minimum Crediting (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023 | Jun. 30, 2023 | Dec. 31, 2022
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Operating Segments |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | $ 5,502.4 | $ 5,514.2 | $ 5,547.4 | $ 5,598.6
Policyholder Account Balance, Guaranteed Minimum Credit Rating | Operating Segments |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 1,684.1 |  | 1,749.5 |
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Operating Segments |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 3,754.9 |  | 3,770.5 |
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Operating Segments |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 63.4 |  | 27.4 |
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Operating Segments |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Colonial Life |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 849.7 | 852.9 | 852.1 | 852.4
Colonial Life | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0500 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 849.7 |  | 852.1 |
Colonial Life | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0500 | Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 843.4 |  | 846.0 |
Colonial Life | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0500 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 6.3 |  | 6.1 |
Colonial Life | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0500 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Colonial Life | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0500 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Other Insurance Product Line | Closed Block |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 4,080.0 | 4,082.7 | 4,114.8 | 4,159.4
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 496.7 |  | 509.8 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 3,556.2 |  | 3,577.6 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 27.1 |  | 27.4 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 and 0599 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 1,605.5 |  | 1,645.9 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 and 0599 | Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 494.2 |  | 507.4 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 and 0599 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 1,084.2 |  | 1,111.1 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 and 0599 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 27.1 |  | 27.4 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 and 0599 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0600 and 0899 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 26.3 |  | 32.5 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0600 and 0899 | Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 2.5 |  | 2.4 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0600 and 0899 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 23.8 |  | 30.1 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0600 and 0899 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0600 and 0899 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0900 and 1199 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 2,256.0 |  | 2,256.1 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0900 and 1199 | Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0900 and 1199 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 2,256.0 |  | 2,256.1 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0900 and 1199 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0900 and 1199 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 1200 and 1500 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 192.2 |  | 180.3 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 1200 and 1500 | Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 1200 and 1500 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 192.2 |  | 180.3 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 1200 and 1500 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 1200 and 1500 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Voluntary Benefits | Unum US |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 572.7 | $ 578.6 | 580.5 | $ 586.8
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 344.0 |  | 393.7 |
Voluntary Benefits | Unum US | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 192.4 |  | 186.8 |
Voluntary Benefits | Unum US | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 36.3 |  | 0.0 |
Voluntary Benefits | Unum US | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 90.3 |  | 92.4 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 | Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 90.3 |  | 92.4 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0499 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 450.7 |  | 455.0 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0499 | Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 222.0 |  | 268.2 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0499 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 192.4 |  | 186.8 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0499 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 36.3 |  | 0.0 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0499 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0500 and 0600 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 31.7 |  | 33.1 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0500 and 0600 | Policyholder Account Balance, Guaranteed Minimum Credit Rating |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 31.7 |  | 33.1 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0500 and 0600 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0500 and 0600 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | 0.0 |  | 0.0 |
Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0500 and 0600 | Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, before Reserves in excess of Account Balance, End of Period | $ 0.0 |  | $ 0.0 |
Minimum | Colonial Life | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0500 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 4.00% |  | 4.00% |
Minimum | Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 and 0599 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 3.00% |  | 3.00% |
Minimum | Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0600 and 0899 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 6.00% |  | 6.00% |
Minimum | Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0900 and 1199 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 9.00% |  | 9.00% |
Minimum | Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 1200 and 1500 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 12.00% |  | 12.00% |
Minimum | Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 3.00% |  | 3.00% |
Minimum | Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0499 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 4.00% |  | 4.00% |
Minimum | Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0500 and 0600 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 5.00% |  | 5.00% |
Maximum | Colonial Life | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0500 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 5.00% |  | 5.00% |
Maximum | Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 and 0599 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 5.99% |  | 5.99% |
Maximum | Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0600 and 0899 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 8.99% |  | 8.99% |
Maximum | Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0900 and 1199 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 11.99% |  | 11.99% |
Maximum | Other Insurance Product Line | Closed Block | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 1200 and 1500 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 15.00% |  | 15.00% |
Maximum | Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0300 to 0399 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 3.99% |  | 3.99% |
Maximum | Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0400 and 0499 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 4.99% |  | 4.99% |
Maximum | Voluntary Benefits | Unum US | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range from 0500 and 0600 |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items] |  |  |  |
Policyholder Account Balance, Guaranteed Minimum Credit Rating | 6.00% |  | 6.00% |

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