Liability for Future Policy Benefit Activity (Details) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2023		Jun. 30, 2022		Dec. 31, 2022		Dec. 31, 2021	Jan. 01, 2021
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Future Policy Benefits		$ 38,945.3		$ 41,407.7	[1]	$ 38,577.1	[2]
Operating Segments
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change, balance beginning of year		12,426.2		15,881.3
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at beginning of period		12,695.3		13,186.2
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0.0		$ 0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(118.1)		(174.5)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change						12,577.2		13,011.7
Liability for Future Policy Benefit, Expected Net Premium, Issuance		514.4		548.7
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		275.7		290.6
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		(774.1)		(814.2)
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change		20.0		(26.3)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at end of period		12,613.2		13,010.5
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(153.3)		330.1
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		12,459.9		13,340.6
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, beginning of year		48,929.4		65,305.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, beginning of period		49,689.0		50,397.2
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(351.3)		(294.0)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change						$ 49,337.7		$ 50,103.2
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[3]	1,837.0		1,960.5
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		1,104.6		1,137.6
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(2,888.7)		(2,934.4)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change		140.8		(276.1)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, end of period		49,531.4		49,990.8
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(173.3)		2,485.6
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, end of year		49,358.1		52,476.4
Liability for Future Policy Benefit, before Reinsurance, before Other		36,898.2		39,135.8
Liability for Future Policy Benefits, Other Contracts		1,806.7		2,055.5
Liability for Future Policy Benefit, before Reinsurance, after Other		38,704.9		41,191.3					$ 55,585.4
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		7,922.9		8,621.9					10,496.0	[4]
Liability for Future Policy Benefit, after Reinsurance		30,782.0		32,569.4					45,089.4
Liability for Future Policy Benefit, Gross Premium Income		4,828.8		4,701.2
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		828.9		847.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance		96,348.8		97,127.5
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance		35,233.5		35,019.4
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance		$ 23,774.0		$ 23,766.2
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate		4.80%		4.70%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate		5.00%		4.40%		5.00%		2.50%
Liability for Future Policy Benefit, Weighted-Average Duration		10 years 9 months 18 days		10 years 9 months 18 days
Future Policy Benefits		$ 38,945.3		$ 41,407.7
Unum US
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change, balance beginning of year		2,071.1		2,619.1
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at beginning of period		2,166.0		2,311.9
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						$ 0.0		$ 0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(113.9)		(83.9)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change						2,052.1		2,228.0
Liability for Future Policy Benefit, Expected Net Premium, Issuance		200.9		208.4
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		38.1		41.7
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		(163.1)		(180.8)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at end of period		2,128.0		2,297.3
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(77.0)		(15.1)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		2,051.0		2,282.2
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, beginning of year		11,698.2		14,564.4
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, beginning of period		12,177.3		12,671.7
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(355.1)		(237.1)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change						11,822.2		12,434.6
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		1,240.7		1,323.6
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		234.0		249.1
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(1,422.7)		(1,487.5)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, end of period		11,874.2		12,519.8
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(372.7)		27.1
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, end of year		11,501.5		12,546.9
Liability for Future Policy Benefit, before Reinsurance, before Other		9,450.5		10,264.7
Liability for Future Policy Benefits, Other Contracts		45.6		75.2
Liability for Future Policy Benefit, before Reinsurance, after Other		9,496.1		10,339.9					12,861.4
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		242.9		270.8					357.7	[4]
Liability for Future Policy Benefit, after Reinsurance		9,253.2		10,069.1					12,503.7
Liability for Future Policy Benefit, Gross Premium Income		3,105.7		2,999.2
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		195.9		207.4
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance		17,520.9		17,879.7
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance		9,495.3		9,700.4
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance		$ 6,866.5		$ 7,114.3
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate		4.10%		4.10%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate		4.70%		4.10%
Liability for Future Policy Benefit, Weighted-Average Duration		6 years 9 months 18 days		6 years 6 months
Future Policy Benefits	[5]	$ 9,496.1		$ 10,339.9
Unum International
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change, balance beginning of year		197.1		260.5
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at beginning of period		246.8		258.1
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						8.0		4.5
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change						254.8		262.6
Liability for Future Policy Benefit, Expected Net Premium, Issuance		11.9		8.2
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		4.5		4.3
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		(10.9)		(11.3)
Liability for Future Policy Benefit, Expected Net Premium, Increase (Decrease) for Other Change		20.0		(26.3)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at end of period		280.3		237.5
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(36.9)		(49.4)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		243.4		188.1
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, beginning of year		2,231.4		3,181.8
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, beginning of period		2,495.5		2,703.8
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						7.8		43.3
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change						2,503.3		2,747.1
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance	[6]	199.8		188.2
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		31.7		34.6
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(214.0)		(201.1)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Increase (Decrease) for Other Change		140.8		(276.1)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, end of period		2,661.6		2,492.7
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(336.5)		(117.2)
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, end of year		2,325.1		2,375.5
Liability for Future Policy Benefit, before Reinsurance, before Other		2,081.7		2,187.4
Liability for Future Policy Benefits, Other Contracts		32.4		27.5
Liability for Future Policy Benefit, before Reinsurance, after Other		2,114.1		2,214.9					3,203.4
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		73.4		82.0					132.5	[4]
Liability for Future Policy Benefit, after Reinsurance		2,040.7		2,132.9					3,070.9
Liability for Future Policy Benefit, Gross Premium Income		436.0		400.4
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		27.2		30.3
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance		4,189.4		3,930.4
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance		1,092.4		860.3
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance		$ 717.8		$ 577.4
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate		4.00%		3.80%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate		5.70%		4.00%
Liability for Future Policy Benefit, Weighted-Average Duration		8 years 7 months 6 days		8 years 9 months 18 days
Future Policy Benefits		$ 2,114.1		$ 2,214.9
Colonial Life
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change, balance beginning of year		3,745.4		4,597.0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at beginning of period		4,046.4		4,158.9
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(63.5)		(55.7)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change						3,982.9		4,103.2
Liability for Future Policy Benefit, Expected Net Premium, Issuance		301.6		332.1
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		65.4		67.9
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		(316.7)		(338.6)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at end of period		4,033.2		4,164.6
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(259.2)		(149.0)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		3,774.0		4,015.6
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, beginning of year		5,581.1		7,054.8
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, beginning of period		6,163.9		6,201.5
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(68.9)		(68.6)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change						6,095.0		6,132.9
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		324.4		356.2
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		110.3		112.1
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(321.1)		(319.3)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, end of period		6,208.6		6,281.9
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(502.8)		(272.2)
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, end of year		5,705.8		6,009.7
Liability for Future Policy Benefit, before Reinsurance, before Other		1,931.8		1,994.1
Liability for Future Policy Benefits, Other Contracts		19.6		24.8
Liability for Future Policy Benefit, before Reinsurance, after Other		1,951.4		2,018.9					2,528.6
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		1.0		1.5					4.4	[4]
Liability for Future Policy Benefit, after Reinsurance		1,950.4		2,017.4					2,524.2
Liability for Future Policy Benefit, Gross Premium Income		825.8		822.3
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		44.9		44.2
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance		10,201.7		9,709.3
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance		12,391.5		11,645.9
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance		$ 9,018.7		$ 8,696.2
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate		4.30%		4.40%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate		5.10%		4.60%
Liability for Future Policy Benefit, Weighted-Average Duration		17 years 3 months 18 days		16 years 2 months 12 days
Future Policy Benefits		$ 1,951.4		$ 2,018.9
Closed Block
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change, balance beginning of year		6,412.6		8,404.7
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at beginning of period		6,236.1		6,457.3
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						51.3		(39.4)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change						6,287.4		6,417.9
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		167.7		176.7
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		(283.4)		(283.5)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at end of period		6,171.7		6,311.1
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		219.8		543.6
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		6,391.5		6,854.7
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, beginning of year		29,418.7		40,504.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, beginning of period		28,852.3		28,820.2
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						64.9		(31.6)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change						28,917.2		28,788.6
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		72.1		92.5
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		728.6		741.8
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(930.9)		(926.5)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, end of period		28,787.0		28,696.4
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		1,038.7		2,847.9
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, end of year		29,825.7		31,544.3
Liability for Future Policy Benefit, before Reinsurance, before Other		23,434.2		24,689.6
Liability for Future Policy Benefits, Other Contracts		1,709.1		1,928.0
Liability for Future Policy Benefit, before Reinsurance, after Other		25,143.3		26,617.6					36,992.0
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		7,605.5		8,267.5					10,001.4	[4]
Liability for Future Policy Benefit, after Reinsurance		17,537.8		18,350.1					26,990.6
Liability for Future Policy Benefit, Gross Premium Income		461.3		479.3
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		560.9		565.1
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance		64,436.8		65,608.1
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance		12,254.3		12,812.8
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance		$ 7,171.0		$ 7,378.3
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate		5.20%		5.20%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate		5.10%		4.50%
Liability for Future Policy Benefit, Weighted-Average Duration		12 years 2 months 12 days		12 years 6 months
Future Policy Benefits	[5]	$ 25,143.3		$ 26,617.6
Other Products [Member]
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Future Policy Benefits	[5]	240.4		216.4
Group Disability | Unum US
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change, balance beginning of year		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at beginning of period		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Issuance		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at end of period		0.0		0.0
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, beginning of year		5,533.3		6,725.7
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, beginning of period		5,793.1		6,158.3
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(162.8)		(120.4)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change						5,630.3		6,037.9
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		714.3	[7]	789.2	[8]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		98.4		113.4
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(855.0)		(876.1)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, end of period		5,588.0		6,064.4
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(224.0)		(66.8)
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, end of year		5,364.0		5,997.6
Liability for Future Policy Benefit, before Reinsurance, before Other		5,364.0		5,997.6
Liability for Future Policy Benefits, Other Contracts		0.3		0.5
Liability for Future Policy Benefit, before Reinsurance, after Other		5,364.3		5,998.1					7,295.7
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		33.7		37.4					58.3
Liability for Future Policy Benefit, after Reinsurance		5,330.6		5,960.7					7,237.4
Liability for Future Policy Benefit, Gross Premium Income		1,463.6		1,372.4
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		98.4		113.4
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance		6,731.6		7,323.2
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance		0.0		0.0
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance		$ 0.0		$ 0.0
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate		3.90%		3.80%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate		4.90%		4.10%
Liability for Future Policy Benefit, Weighted-Average Duration		4 years 3 months 18 days		4 years 4 months 24 days
Group Life and AD&D | Unum US
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change, balance beginning of year		$ 0.0		$ 0.0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at beginning of period		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Issuance		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at end of period		0.0		0.0
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, beginning of year		972.6		1,124.1
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, beginning of period		998.5		1,058.3
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(25.4)		(22.2)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change						973.1		1,036.1
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		311.7	[7]	311.4	[8]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		11.1		13.2
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(349.1)		(380.4)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, end of period		946.8		980.3
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(23.5)		(7.4)
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, end of year		923.3		972.9
Liability for Future Policy Benefit, before Reinsurance, before Other		923.3		972.9
Liability for Future Policy Benefits, Other Contracts		0.9		0.9
Liability for Future Policy Benefit, before Reinsurance, after Other		924.2		973.8					1,127.3
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		6.5		5.6					3.0
Liability for Future Policy Benefit, after Reinsurance		917.7		968.2					1,124.3
Liability for Future Policy Benefit, Gross Premium Income		930.5		929.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		11.1		13.2
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance		1,077.4		1,139.2
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance		0.0		0.0
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance		$ 0.0		$ 0.0
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate		2.20%		2.40%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate		2.80%		2.60%
Liability for Future Policy Benefit, Weighted-Average Duration		2 years 8 months 12 days		3 years 1 month 6 days
Individual Disability | Unum US
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change, balance beginning of year		$ 1,202.9		$ 1,494.3
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at beginning of period		1,228.1		1,279.6
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(22.4)		(14.1)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change						1,205.7		1,265.5
Liability for Future Policy Benefit, Expected Net Premium, Issuance		98.3		89.5
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		24.4		26.4
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		(89.0)		(89.0)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at end of period		1,239.4		1,292.4
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(20.2)		21.8
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		1,219.2		1,314.2
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, beginning of year		3,192.8		4,017.3
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, beginning of period		3,244.5		3,253.3
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(45.8)		(20.2)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change						3,198.7		3,233.1
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		102.4		92.9
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		82.0		78.6
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(135.4)		(127.6)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, end of period		3,247.7		3,277.0
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(24.4)		110.4
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, end of year		3,223.3		3,387.4
Liability for Future Policy Benefit, before Reinsurance, before Other		2,004.1		2,073.2
Liability for Future Policy Benefits, Other Contracts		27.0		58.2
Liability for Future Policy Benefit, before Reinsurance, after Other		2,031.1		2,131.4					2,767.7
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		190.7		201.8					260.6
Liability for Future Policy Benefit, after Reinsurance		1,840.4		1,929.6					2,507.1
Liability for Future Policy Benefit, Gross Premium Income		314.4		296.4
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		57.6		52.2
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance		5,185.6		5,226.3
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance		5,637.4		5,638.5
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance		$ 4,045.8		$ 4,012.3
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate		5.10%		5.10%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate		5.00%		4.40%
Liability for Future Policy Benefit, Weighted-Average Duration		9 years 6 months		9 years 6 months
Voluntary Benefits | Unum US
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change, balance beginning of year		$ 868.2		$ 1,124.8
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at beginning of period		937.9		1,032.3
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(91.5)		(69.8)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change						846.4		962.5
Liability for Future Policy Benefit, Expected Net Premium, Issuance		102.6		118.9
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		13.7		15.3
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		(74.1)		(91.8)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at end of period		888.6		1,004.9
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		(56.8)		(36.9)
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		831.8		968.0
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, beginning of year		1,999.5		2,697.3
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, beginning of period		2,141.2		2,201.8
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(121.1)		(74.3)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change						2,020.1		2,127.5
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		112.3		130.1
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		42.5		43.9
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(83.2)		(103.4)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, end of period		2,091.7		2,198.1
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(100.8)		(9.1)
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, end of year		1,990.9		2,189.0
Liability for Future Policy Benefit, before Reinsurance, before Other		1,159.1		1,221.0
Liability for Future Policy Benefits, Other Contracts		17.4		15.6
Liability for Future Policy Benefit, before Reinsurance, after Other		1,176.5		1,236.6					1,659.2
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		12.0		26.0					35.7
Liability for Future Policy Benefit, after Reinsurance		1,164.5		1,210.6					1,623.5
Liability for Future Policy Benefit, Gross Premium Income		397.2		401.4
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		28.8		28.6
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance		4,526.3		4,191.0
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance		3,857.9		4,061.9
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance		$ 2,820.7		$ 3,102.0
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate		5.00%		5.10%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate		5.00%		4.60%
Liability for Future Policy Benefit, Weighted-Average Duration		17 years 8 months 12 days		15 years 8 months 12 days
Other Insurance Product Line | Closed Block
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change, balance beginning of year		$ 0.0		$ 0.0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at beginning of period		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at end of period		0.0		0.0
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, beginning of year		8,218.8		10,414.4
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, beginning of period		8,630.7		8,949.4
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						(6.0)		12.9
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change						8,624.7		8,962.3
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		72.1	[9]	92.5	[10]
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		179.2		188.3
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(523.0)		(567.6)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, end of period		8,353.0		8,675.5
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		(344.6)		(11.0)
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, end of year		8,008.4		8,664.5
Liability for Future Policy Benefit, before Reinsurance, before Other		8,008.4		8,664.5
Liability for Future Policy Benefits, Other Contracts		1,684.6	[11]	1,904.0	[12]
Liability for Future Policy Benefit, before Reinsurance, after Other		9,693.0		10,568.5					14,251.1
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		7,600.1		8,261.8					9,957.0
Liability for Future Policy Benefit, after Reinsurance		2,092.9		2,306.7					4,294.1
Liability for Future Policy Benefit, Gross Premium Income		112.3		130.7
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		179.2		188.3
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance		12,312.6		12,719.4
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance		0.0		0.0
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance		$ 0.0		$ 0.0
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate		4.60%		4.60%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate		5.10%		4.50%
Liability for Future Policy Benefit, Weighted-Average Duration		7 years 3 months 18 days		7 years 2 months 12 days
Long-term Care | Closed Block
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change, balance beginning of year		$ 6,412.6		$ 8,404.7
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at beginning of period		6,236.1		6,457.3
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Net Premium, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						51.3		(39.4)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Reinsurance, after Cash Flow Change						6,287.4		6,417.9
Liability for Future Policy Benefit, Expected Net Premium, Interest Income		167.7		176.7
Liability for Future Policy Benefit, Expected Net Premium, Net Premium Collected		(283.4)		(283.5)
Liability for Future Policy Benefit, Expected Net Premium, Original Discount Rate, before Cash Flow and Reinsurance, balance at end of period		6,171.7		6,311.1
AOCI, Liability for Future Policy Benefit, Expected Net Premium, before Tax		219.8		543.6
Liability for Future Policy Benefit, Expected Net Premium, before Reinsurance, after Discount Rate Change		6,391.5		6,854.7
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, beginning of year		21,199.9		30,089.6
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, beginning of period		20,221.6		19,870.8
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) from Cash Flow Change						0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Cumulative Increase (Decrease) of Actual Variance from Expected Experience						70.9		(44.5)
Liability for Future Policy Benefit, Expected Future Benefit, Original Discount Rate, before Reinsurance, after Cash Flow Change						$ 20,292.5		$ 19,826.3
Liability for Future Policy Benefit, Expected Future Policy Benefit, Issuance		0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		549.4		553.5
Liability for Future Policy Benefit, Expected Future Policy Benefit, Benefit Payment		(407.9)		(358.9)
Liability for Future Policy Benefit, Expected Future Policy Benefit, Original Discount Rate, before Cash Flow and Reinsurance, end of period		20,434.0		20,020.9
AOCI, Liability for Future Policy Benefit, Expected Future Policy Benefit, before Tax		1,383.3		2,858.9
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change, end of year		21,817.3		22,879.8
Liability for Future Policy Benefit, before Reinsurance, before Other		15,425.8		16,025.1
Liability for Future Policy Benefits, Other Contracts		24.5		24.0
Liability for Future Policy Benefit, before Reinsurance, after Other		15,450.3		16,049.1					22,740.9
Liability for Future Policy Benefit, Reinsurance Recoverable, after Allowance		5.4		5.7					44.4
Liability for Future Policy Benefit, after Reinsurance		15,444.9		16,043.4					$ 22,696.5
Liability for Future Policy Benefit, Gross Premium Income		349.0		348.6
Liability for Future Policy Benefit, Expected Future Policy Benefit, Interest Expense		381.7		376.8
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance		52,124.2		52,888.7
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance		12,254.3		12,812.8
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance		$ 7,171.0		$ 7,378.3
Liability for Future Policy Benefit, Weighted-Average Interest Accretion Rate		5.60%		5.50%
Liability for Future Policy Benefit, Current Weighted-Average Discount Rate		5.10%		4.50%
Liability for Future Policy Benefit, Weighted-Average Duration		15 years 1 month 6 days		15 years 10 months 24 days

[1] 2We previously reported policy and contract benefits and reserves for future policy and contract benefits liabilities in our consolidated balance sheet as of June 30, 2022 of $1,815.9 million and $43,088.0 million, respectively, resulting in total policyholder liabilities of $44,903.9 million. These balances were reclassified into new line items, future policy benefits and policyholders' account balances, which would have reported balances of $39,154.8 million and $5,749.1 million, respectively, as of June 30, 2022, resulting in total policyholder liabilities of $44,903.9 million under the historical accounting method.

[2] 1We previously reported policy and contract benefits and reserves for future policy and contract benefits liabilities in our consolidated balance sheet as of December 31, 2022 of $1,839.8 million and 42,330.2 million, respectively, resulting in total policyholder liabilities of $44,170.0 million. These balances were reclassified into new line items, future policy benefits and policyholders' account balances, which would have reported balances of $38,443.2 million and $5,726.8 million, respectively, as of December 31, 2022, resulting in total policyholder liabilities of $44,170.0 million under the historical accounting method.

[3] 1Issuances include new policy issuances for most product lines. For our Unum US group disability, Unum US group life and AD&D and Closed Block - All Other product lines and certain of our Unum International product lines, this line represents new claim incurrals.

[4] 5These amounts represent the portion of reinsurance recoverable related to the liability for future policy benefits. These amounts include the adjustments for the removal of shadow adjustments and for the effect of change in discount rate assumptions for the liability for future policy benefits ceded to third party reinsurers.

[5] 1Unum US excludes dental & vision and medical stop-loss product lines and Closed Block excludes our participating fund account, which represents policies issued by one of our subsidiaries prior to its 1986 conversion from a mutual stock life insurance company. The liabilities associated with these products are included within Other products.

[6] 1Issuances for Unum International primarily represents new claim incurrals.

[7] 1Issuances include new policy issuances for most product lines. Issuances for Unum US group disability and Unum US group life and AD&D represents new claim incurrals.

[8] 1Issuances include new policy issuances for most product lines. Issuances for Unum US group disability and Unum US group life and AD&D represents new claim incurrals.

[9] 1Issuances for Closed Block - All Other represents new claim incurrals.

[10] 1Issuances for Closed Block - All Other represents new claim incurrals.

[11] 2Other for Closed Block - All Other primarily includes our closed block group pension products and certain of our ceded closed block individual life products.

[12] 2Other for Closed Block - All Other primarily includes our closed block group pension products and certain of our ceded closed block individual life products.