Interim Condensed Consolidated Statements of Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Changes in liability for future policyholder benefits	$ 6.1	$ 1.6	$ 8.6	$ 21.9
Changes in deferred profit liability	15.9	19.1	51.6	56.8
Less: Net Loss attributable to Noncontrolling Interest	(0.1)	0.0	(0.1)	0.0
Net Loss	(146.3)	(74.8)	(323.5)	(233.3)
Net Loss	(146.4)	(74.8)	(323.6)	(233.3)
Loss before Income Taxes	$ (190.8)	$ (87.8)	$ (410.6)	$ (298.1)