Liability for Future Policy Benefit Activity (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024		Mar. 31, 2023		Dec. 31, 2023	Dec. 31, 2022
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Foreign currency		$ (24.2)		$ 49.3
Expected future benefit payments		104,905.0		96,591.0
Expected future gross premiums		39,072.6		35,284.9
Expected future gross premiums		$ 25,772.6		$ 23,805.9
Interest accretion rate		4.90%		4.80%
Weighted average duration of the liability		11 years 6 months		10 years 10 months 24 days
Future Policy Benefits		$ 38,624.5				$ 40,009.4
Unum US
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Present Value of Expected Net Premiums, Balance at beginning of year		2,431.4		$ 2,071.1
Beginning balance at original discount rate		2,486.9		2,166.0
Effect of changes in cash flow assumptions						0.0	$ 0.0
Effect of actual variances from expected experience						(98.6)	(98.5)
Adjusted beginning of year balance						2,388.3	2,067.5
Issuances		254.2		134.5
Interest accretion		24.1		19.3
Net premiums collected		(99.8)		(82.5)
Ending balance at original discount rate		2,566.8		2,138.8
Effect of change in discount rate assumptions		(93.0)		(57.2)
Present Value of Expected Net Premiums, balance at end of period		2,473.8		2,081.6
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Present value of expected future policy benefits, beginning of year		11,752.5		11,698.2
Beginning balance at original discount rate		11,949.5		12,177.3
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(211.6)	(250.6)
Adjusted beginning of year balance						11,737.9	11,926.7
Issuances		859.5	[1]	796.2	[2]
Interest accretion		115.4		120.4
Benefit payments		(819.2)		(862.1)
Ending balance at original discount rate		11,893.6		11,981.2
Effect of change in discount rate assumptions		(396.2)		(273.8)
Balance, end of period		11,497.4		11,707.4
Net liability for future policy benefits		9,023.6		9,625.8
Other		30.4		45.5
Total liability for future policy benefits		9,054.0		9,671.3
Less: Reinsurance recoverable related to future policy benefits		205.8		255.8
Net liability for future policy benefits, after reinsurance recoverable		8,848.2		9,415.5
Gross premiums or assessments		1,621.7		1,537.0
Interest accretion		91.3		101.1
Expected future benefit payments		17,908.8		17,632.6
Expected future gross premiums		11,471.8		9,481.2
Expected future gross premiums		$ 7,992.2		$ 6,864.4
Interest accretion rate		4.20%		4.10%
Current discount rate		4.70%		4.50%
Weighted average duration of the liability		7 years		6 years 9 months 18 days
Future Policy Benefits	[3]	$ 9,054.0		$ 9,671.3
Unum International
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Present Value of Expected Net Premiums, Balance at beginning of year		270.3		197.1
Beginning balance at original discount rate		298.4		246.8
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						7.2	4.5
Adjusted beginning of year balance						305.6	251.3
Issuances		8.8		6.3
Interest accretion		3.0		2.2
Net premiums collected		(7.3)		(5.2)
Foreign currency		(3.4)		3.4
Ending balance at original discount rate		306.7		258.0
Effect of change in discount rate assumptions		(29.9)		(38.4)
Present Value of Expected Net Premiums, balance at end of period		276.8		219.6
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Present value of expected future policy benefits, beginning of year		2,527.4		2,231.4
Beginning balance at original discount rate		2,687.1		2,495.5
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(0.5)	2.2
Adjusted beginning of year balance						2,686.6	2,497.7
Issuances	[4]	113.9		105.4
Interest accretion		16.9		15.7
Benefit payments		(132.1)		(118.6)
Ending balance at original discount rate		2,661.1		2,549.5
Effect of change in discount rate assumptions		(206.9)		(211.8)
Balance, end of period		2,454.2		2,337.7
Net liability for future policy benefits		2,177.4		2,118.1
Other		35.9		30.5
Total liability for future policy benefits		2,213.3		2,148.6
Less: Reinsurance recoverable related to future policy benefits		69.7		74.7
Net liability for future policy benefits, after reinsurance recoverable		2,143.6		2,073.9
Gross premiums or assessments		230.5		208.5
Interest accretion		13.9		13.5
Expected future benefit payments		4,230.4		3,988.8
Expected future gross premiums		1,246.6		995.8
Expected future gross premiums		$ 807.5		$ 657.2
Interest accretion rate		4.10%		3.90%
Current discount rate		4.90%		4.80%
Weighted average duration of the liability		8 years 7 months 6 days		8 years 7 months 6 days
Future Policy Benefits		$ 2,213.3		$ 2,148.6
Colonial Life
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Present Value of Expected Net Premiums, Balance at beginning of year		3,592.6		3,745.4
Beginning balance at original discount rate		3,754.3		4,046.4
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						3.7	(46.3)
Adjusted beginning of year balance						3,758.0	4,000.1
Issuances		172.9		175.0
Interest accretion		35.1		33.0
Net premiums collected		(164.4)		(164.1)
Ending balance at original discount rate		3,801.6		4,044.0
Effect of change in discount rate assumptions		(213.7)		(229.5)
Present Value of Expected Net Premiums, balance at end of period		3,587.9		3,814.5
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Present value of expected future policy benefits, beginning of year		5,566.0		5,581.1
Beginning balance at original discount rate		5,925.2		6,163.9
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(6.1)	(39.5)
Adjusted beginning of year balance						5,919.1	6,124.4
Issuances		181.4		184.9
Interest accretion		58.0		55.4
Benefit payments		(161.2)		(168.3)
Ending balance at original discount rate		5,997.3		6,196.4
Effect of change in discount rate assumptions		(483.1)		(460.5)
Balance, end of period		5,514.2		5,735.9
Net liability for future policy benefits		1,926.3		1,921.4
Other		24.5		20.7
Total liability for future policy benefits		1,950.8		1,942.1
Less: Reinsurance recoverable related to future policy benefits		1.6		0.8
Net liability for future policy benefits, after reinsurance recoverable		1,949.2		1,941.3
Gross premiums or assessments		430.6		412.2
Interest accretion		22.9		22.4
Expected future benefit payments		9,989.6		10,121.7
Expected future gross premiums		12,133.1		12,359.9
Expected future gross premiums		$ 8,840.9		$ 9,030.0
Interest accretion rate		4.30%		4.30%
Current discount rate		5.10%		5.00%
Weighted average duration of the liability		17 years		17 years 4 months 24 days
Future Policy Benefits		$ 1,950.8		$ 1,942.1
Closed Block
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Present Value of Expected Net Premiums, Balance at beginning of year		8,123.5		6,412.6
Beginning balance at original discount rate		7,703.6		6,236.1
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(23.1)	8.4
Adjusted beginning of year balance						7,680.5	6,244.5
Interest accretion		101.3		84.2
Net premiums collected		(155.2)		(141.9)
Ending balance at original discount rate		7,626.6		6,186.8
Effect of change in discount rate assumptions		223.5		298.1
Present Value of Expected Net Premiums, balance at end of period		7,850.1		6,484.9
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Present value of expected future policy benefits, beginning of year		32,577.7		29,418.7
Beginning balance at original discount rate		30,743.9		28,852.3
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						12.3	4.5
Adjusted beginning of year balance						30,756.2	28,856.8
Issuances		33.0	[5]	44.9	[6]
Interest accretion		389.2		365.3
Benefit payments		(485.6)		(464.2)
Ending balance at original discount rate		30,692.8		28,802.8
Effect of change in discount rate assumptions		708.7		1,291.4
Balance, end of period		31,401.5		30,094.2
Net liability for future policy benefits		23,551.4		23,609.3
Other		1,613.3		1,752.8
Total liability for future policy benefits		25,164.7		25,362.1
Less: Reinsurance recoverable related to future policy benefits		7,226.8		7,816.8
Net liability for future policy benefits, after reinsurance recoverable		17,937.9		17,545.3
Gross premiums or assessments		225.0		232.3
Interest accretion		287.9		281.1
Expected future benefit payments		72,776.2		64,847.9
Expected future gross premiums		14,221.1		12,448.0
Expected future gross premiums		$ 8,132.0		$ 7,254.3
Interest accretion rate		5.20%		5.20%
Current discount rate		5.20%		5.00%
Weighted average duration of the liability		13 years 1 month 6 days		12 years 3 months 18 days
Future Policy Benefits	[3]	$ 25,164.7		$ 25,362.1
Other Products
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Future Policy Benefits	[3]	241.7		227.4
Group Disability | Unum US
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Present Value of Expected Net Premiums, Balance at beginning of year		0.0		0.0
Beginning balance at original discount rate		0.0		0.0
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						0.0	0.0
Adjusted beginning of year balance						0.0	0.0
Issuances		0.0		0.0
Interest accretion		0.0		0.0
Net premiums collected		0.0		0.0
Ending balance at original discount rate		0.0		0.0
Effect of change in discount rate assumptions		0.0		0.0
Present Value of Expected Net Premiums, balance at end of period		0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Present value of expected future policy benefits, beginning of year		5,147.4		5,533.3
Beginning balance at original discount rate		5,277.1		5,793.1
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(73.0)	(107.5)
Adjusted beginning of year balance						5,204.1	5,685.6
Issuances		386.6	[1]	425.3	[2]
Interest accretion		46.8		52.2
Benefit payments		(460.7)		(484.8)
Ending balance at original discount rate		5,176.8		5,678.3
Effect of change in discount rate assumptions		(180.7)		(179.5)
Balance, end of period		4,996.1		5,498.8
Net liability for future policy benefits		4,996.1		5,498.8
Other		0.2		0.5
Total liability for future policy benefits		4,996.3		5,499.3
Less: Reinsurance recoverable related to future policy benefits		29.1		42.5
Net liability for future policy benefits, after reinsurance recoverable		4,967.2		5,456.8
Gross premiums or assessments		754.1		718.2
Interest accretion		46.8		52.2
Expected future benefit payments		6,251.2		6,834.2
Expected future gross premiums		0.0		0.0
Expected future gross premiums		$ 0.0		$ 0.0
Interest accretion rate		4.00%		3.80%
Current discount rate		4.90%		4.60%
Weighted average duration of the liability		4 years 2 months 12 days		4 years 3 months 18 days
Group Life and AD&D | Unum US
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Present Value of Expected Net Premiums, Balance at beginning of year		$ 0.0		$ 0.0
Beginning balance at original discount rate		0.0		0.0
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						0.0	0.0
Adjusted beginning of year balance						0.0	0.0
Issuances		0.0		0.0
Interest accretion		0.0		0.0
Net premiums collected		0.0		0.0
Ending balance at original discount rate		0.0		0.0
Effect of change in discount rate assumptions		0.0		0.0
Present Value of Expected Net Premiums, balance at end of period		0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Present value of expected future policy benefits, beginning of year		922.0		972.6
Beginning balance at original discount rate		936.5		998.5
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(19.1)	(21.2)
Adjusted beginning of year balance						917.4	977.3
Issuances		211.6	[1]	228.4	[2]
Interest accretion		5.4		5.9
Benefit payments		(228.9)		(259.2)
Ending balance at original discount rate		905.5		952.4
Effect of change in discount rate assumptions		(20.0)		(18.8)
Balance, end of period		885.5		933.6
Net liability for future policy benefits		885.5		933.6
Other		0.9		0.9
Total liability for future policy benefits		886.4		934.5
Less: Reinsurance recoverable related to future policy benefits		8.7		5.6
Net liability for future policy benefits, after reinsurance recoverable		877.7		928.9
Gross premiums or assessments		494.4		462.2
Interest accretion		5.4		5.9
Expected future benefit payments		1,030.5		1,085.2
Expected future gross premiums		0.0		0.0
Expected future gross premiums		$ 0.0		$ 0.0
Interest accretion rate		2.30%		2.20%
Current discount rate		2.80%		2.70%
Weighted average duration of the liability		2 years 7 months 6 days		2 years 8 months 12 days
Voluntary Benefits | Unum US
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Present Value of Expected Net Premiums, Balance at beginning of year		$ 1,134.7		$ 868.2
Beginning balance at original discount rate		1,192.5		937.9
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(80.7)	(73.6)
Adjusted beginning of year balance						1,111.8	864.3
Issuances		213.4		85.7
Interest accretion		10.2		7.0
Net premiums collected		(50.9)		(37.8)
Ending balance at original discount rate		1,284.5		919.2
Effect of change in discount rate assumptions		(74.8)		(50.9)
Present Value of Expected Net Premiums, balance at end of period		1,209.7		868.3
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Present value of expected future policy benefits, beginning of year		2,334.5		1,999.5
Beginning balance at original discount rate		2,422.0		2,141.2
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(95.5)	(85.9)
Adjusted beginning of year balance						2,326.5	2,055.3
Issuances		219.3	[1]	92.3	[2]
Interest accretion		24.5		21.3
Benefit payments		(61.4)		(49.1)
Ending balance at original discount rate		2,508.9		2,119.8
Effect of change in discount rate assumptions		(156.8)		(90.7)
Balance, end of period		2,352.1		2,029.1
Net liability for future policy benefits		1,142.4		1,160.8
Other		2.6		16.6
Total liability for future policy benefits		1,145.0		1,177.4
Less: Reinsurance recoverable related to future policy benefits		13.9		12.5
Net liability for future policy benefits, after reinsurance recoverable		1,131.1		1,164.9
Gross premiums or assessments		207.8		199.3
Interest accretion		14.3		14.3
Expected future benefit payments		5,330.0		4,564.8
Expected future gross premiums		5,771.9		3,941.1
Expected future gross premiums		$ 3,896.1		$ 2,890.7
Interest accretion rate		5.00%		5.10%
Current discount rate		5.20%		5.00%
Weighted average duration of the liability		18 years 3 months 18 days		17 years 10 months 24 days
Individual Disability | Unum US
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Present Value of Expected Net Premiums, Balance at beginning of year		$ 1,296.7		$ 1,202.9
Beginning balance at original discount rate		1,294.4		1,228.1
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(17.9)	(24.9)
Adjusted beginning of year balance						1,276.5	1,203.2
Issuances		40.8		48.8
Interest accretion		13.9		12.3
Net premiums collected		(48.9)		(44.7)
Ending balance at original discount rate		1,282.3		1,219.6
Effect of change in discount rate assumptions		(18.2)		(6.3)
Present Value of Expected Net Premiums, balance at end of period		1,264.1		1,213.3
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Present value of expected future policy benefits, beginning of year		3,348.6		3,192.8
Beginning balance at original discount rate		3,313.9		3,244.5
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(24.0)	(36.0)
Adjusted beginning of year balance						3,289.9	3,208.5
Issuances		42.0	[1]	50.2	[2]
Interest accretion		38.7		41.0
Benefit payments		(68.2)		(69.0)
Ending balance at original discount rate		3,302.4		3,230.7
Effect of change in discount rate assumptions		(38.7)		15.2
Balance, end of period		3,263.7		3,245.9
Net liability for future policy benefits		1,999.6		2,032.6
Other		26.7		27.5
Total liability for future policy benefits		2,026.3		2,060.1
Less: Reinsurance recoverable related to future policy benefits		154.1		195.2
Net liability for future policy benefits, after reinsurance recoverable		1,872.2		1,864.9
Gross premiums or assessments		165.4		157.3
Interest accretion		24.8		28.7
Expected future benefit payments		5,297.1		5,148.4
Expected future gross premiums		5,699.9		5,540.1
Expected future gross premiums		$ 4,096.1		$ 3,973.7
Interest accretion rate		5.10%		5.10%
Current discount rate		5.10%		4.80%
Weighted average duration of the liability		9 years 7 months 6 days		9 years 4 months 24 days
Long-term Care | Closed Block
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Present Value of Expected Net Premiums, Balance at beginning of year		$ 8,123.5		$ 6,412.6
Beginning balance at original discount rate		7,703.6		6,236.1
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(23.1)	8.4
Adjusted beginning of year balance						7,680.5	6,244.5
Interest accretion		101.3		84.2
Net premiums collected		(155.2)		(141.9)
Ending balance at original discount rate		7,626.6		6,186.8
Effect of change in discount rate assumptions		223.5		298.1
Present Value of Expected Net Premiums, balance at end of period		7,850.1		6,484.9
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Present value of expected future policy benefits, beginning of year		24,697.7		21,199.9
Beginning balance at original discount rate		22,649.3		20,221.6
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(3.3)	12.6
Adjusted beginning of year balance						22,646.0	20,234.2
Issuances		0.0	[5]	0.0	[6]
Interest accretion		300.1		274.7
Benefit payments		(229.0)		(198.4)
Ending balance at original discount rate		22,717.1		20,310.5
Effect of change in discount rate assumptions		1,070.5		1,547.8
Balance, end of period		23,787.6		21,858.3
Net liability for future policy benefits		15,937.5		15,373.4
Other		22.3		25.3
Total liability for future policy benefits		15,959.8		15,398.7
Less: Reinsurance recoverable related to future policy benefits		4.2		5.6
Net liability for future policy benefits, after reinsurance recoverable		15,955.6		15,393.1
Gross premiums or assessments		174.6		175.1
Interest accretion		198.8		190.5
Expected future benefit payments		61,072.6		52,312.2
Expected future gross premiums		14,221.1		12,448.0
Expected future gross premiums		$ 8,132.0		$ 7,254.3
Interest accretion rate		5.60%		5.60%
Current discount rate		5.30%		5.00%
Weighted average duration of the liability		16 years 2 months 12 days		15 years 3 months 18 days
Other Insurance Product Line | Closed Block
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Present Value of Expected Net Premiums, Balance at beginning of year		$ 0.0		$ 0.0
Beginning balance at original discount rate		0.0		0.0
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						0.0	0.0
Adjusted beginning of year balance						0.0	0.0
Interest accretion		0.0		0.0
Net premiums collected		0.0		0.0
Ending balance at original discount rate		0.0		0.0
Effect of change in discount rate assumptions		0.0		0.0
Present Value of Expected Net Premiums, balance at end of period		0.0		0.0
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Present value of expected future policy benefits, beginning of year		7,880.0		8,218.8
Beginning balance at original discount rate		8,094.6		8,630.7
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						15.6	(8.1)
Adjusted beginning of year balance						8,110.2	8,622.6
Issuances		33.0	[5]	44.9	[6]
Interest accretion		89.1		90.6
Benefit payments		(256.6)		(265.8)
Ending balance at original discount rate		7,975.7		8,492.3
Effect of change in discount rate assumptions		(361.8)		(256.4)
Balance, end of period		7,613.9		8,235.9
Net liability for future policy benefits		7,613.9		8,235.9
Other		1,591.0	[7]	1,727.5	[8]
Total liability for future policy benefits		9,204.9		9,963.4
Less: Reinsurance recoverable related to future policy benefits		7,222.6		7,811.2
Net liability for future policy benefits, after reinsurance recoverable		1,982.3		2,152.2
Gross premiums or assessments		50.4		57.2
Interest accretion		89.1		90.6
Expected future benefit payments		11,703.6		12,535.7
Expected future gross premiums		0.0		0.0
Expected future gross premiums		$ 0.0		$ 0.0
Interest accretion rate		4.60%		4.60%
Current discount rate		5.10%		4.90%
Weighted average duration of the liability		7 years 3 months 18 days		7 years 4 months 24 days
Operating Segments
Liability for Future Policy Benefit, Expected Net Premium [Roll Forward]
Present Value of Expected Net Premiums, Balance at beginning of year		$ 14,417.8		$ 12,426.2
Beginning balance at original discount rate		14,243.2		12,695.3
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(110.8)	(131.9)
Adjusted beginning of year balance						14,132.4	12,563.4
Issuances		435.9		315.8
Interest accretion		163.5		138.7
Net premiums collected		(426.7)		(393.7)
Foreign currency		(3.4)		3.4
Ending balance at original discount rate		14,301.7		12,627.6
Effect of change in discount rate assumptions		(113.1)		(27.0)
Present Value of Expected Net Premiums, balance at end of period		14,188.6		12,600.6
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]
Present value of expected future policy benefits, beginning of year		52,423.6		48,929.4
Beginning balance at original discount rate		51,305.7		49,689.0
Effect of changes in cash flow assumptions						0.0	0.0
Effect of actual variances from expected experience						(205.9)	(283.4)
Adjusted beginning of year balance						$ 51,099.8	$ 49,405.6
Issuances	[9]	1,187.8		1,131.4
Interest accretion		579.5		556.8
Benefit payments		(1,598.1)		(1,613.2)
Foreign currency		(24.2)		49.3
Ending balance at original discount rate		51,244.8		49,529.9
Effect of change in discount rate assumptions		(377.5)		345.3
Balance, end of period		50,867.3		49,875.2
Net liability for future policy benefits		36,678.7		37,274.6
Other	[10]	1,704.1		1,849.5
Total liability for future policy benefits		38,382.8		39,124.1
Less: Reinsurance recoverable related to future policy benefits		7,504.0		8,148.2
Net liability for future policy benefits, after reinsurance recoverable		30,878.8		30,975.9
Gross premiums or assessments		2,507.8		2,390.0
Interest accretion		$ 416.0		$ 418.1
Current discount rate		5.10%		4.80%		4.80%	5.00%
Future Policy Benefits		$ 38,624.5		$ 39,351.5

[1] 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.

[2] 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.

[3] 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.

[4] 1Issuances for Unum International primarily represents new claim incurrals.

[5] 1Issuances for Closed Block - All Other represents new claim incurrals.

[6] 1Issuances for Closed Block - All Other represents new claim incurrals.

[7] 2Other for Closed Block - All Other primarily includes our closed block group pension products and certain of our ceded closed block individual life products.

[8] 2Other for Closed Block - All Other primarily includes our closed block group pension products and certain of our ceded closed block individual life products.

[9] 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.

[10] 2Other primarily relates to our Closed Block - All Other product line.