CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Net Income	$ (419.7)	$ 39.7	$ 69.2	$ 564.4
Net Other Comprehensive Income	646.0	(126.6)	584.5	356.4
Comprehensive Income	226.3	(86.9)	653.7	920.8
Net Unrealized Loss on Securities
Net Other Comprehensive Income	(923.0)	275.5	(1,212.7)	777.0
Effect of Change in Discount Rate Assumptions on the LFPB
Net Other Comprehensive Income	1,702.3	(402.3)	1,946.9	(528.8)
Net Loss on Derivatives
Net Other Comprehensive Income	(132.1)	20.8	(132.5)	6.5
Foreign Currency Translation Adjustment
Net Other Comprehensive Income	(3.2)	(25.4)	(24.3)	96.9
Unrecognized Pension and Postretirement Benefit Costs
Net Other Comprehensive Income	$ 2.0	$ 4.8	$ 7.1	$ 4.8