CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
FROM OPERATIONS
Investment income, net	$ 185.1	$ 163.2	$ 528.1	$ 545.5
Net realized (loss) gain on investments	(5.1)	16.7	183.5	(482.1)
Net change in unrealized appreciation (depreciation) on investments and loans payable	1,016.2	(195.5)	1,921.1	(428.0)
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS	1,196.2	(15.6)	2,632.7	(364.6)
FROM PARTICIPANT TRANSACTIONS
Premiums	690.1	401.1	2,155.2	1,533.0
Annuity payments	(11.8)	(11.8)	(35.5)	(35.9)
Withdrawals and death benefits	(509.4)	(1,158.2)	(1,715.9)	(5,012.1)
NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM PARTICIPANT TRANSACTIONS	168.9	(768.9)	403.8	(3,515.0)
NET INCREASE (DECREASE) IN NET ASSETS	1,365.1	(784.5)	3,036.5	(3,879.6)
NET ASSETS
Beginning of period	24,915.3	24,212.8	23,243.9	27,307.9
End of period	$ 26,280.4	$ 23,428.3	$ 26,280.4	$ 23,428.3