CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities
Net Income	$ 664.5	$ 657.6
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities
Change in Receivables	427.2	163.2
Change in Deferred Acquisition Costs	(51.9)	(19.8)
Change in Insurance Reserves and Liabilities	223.7	129.2
Change in Income Taxes	205.0	162.0
Change in Other Accrued Liabilities	(64.2)	(1.5)
Non-cash Components of Net Investment Income	(175.8)	(111.3)
Net Realized Investment (Gain) Loss	(85.4)	105.8
Depreciation	90.0	85.6
Cash Related to Reinsurance Agreement	456.8	0.0
Amortization of the Cost of Reinsurance	59.4	0.0
Other, Net	59.8	68.4
Net Cash Provided by Operating Activities	999.3	1,278.8
Cash Flows from Investing Activities
Proceeds from Sale of Debt Securities, Available-for-sale	322.3	499.7
Proceeds from Maturities of Fixed Maturity Securities	1,976.6	1,594.2
Proceeds from Sales and Maturities of Other Investments	273.8	163.9
Payments to Acquire Debt Securities, Available-for-sale	(3,123.5)	(2,229.5)
Purchases of Other Investments	(389.3)	(289.6)
Net Sales (Purchases) of Short-term Investments	67.1	(769.8)
Net Increase in Payables for Collateral on Investments	50.0	40.5
Net Purchases of Property and Equipment	(82.4)	(99.5)
Other, Net	0.4	0.0
Net Cash Used by Investing Activities	(905.8)	(1,090.1)
Cash Flows from Financing Activities
Short-term Debt Repayment	0.0	(400.0)
Issuance of Long-term Debt	588.1	494.1
Long-term Debt Repayment	(500.0)	(45.0)
Cost Related to Early Retirement of Debt	(62.8)	0.0
Issuance of Common Stock	2.3	3.3
Dividends Paid to Stockholders	(178.0)	(173.8)
Cash Received Related to Active Life Volatility Cover Agreement	40.4	0.0
Other, Net	(58.8)	(47.6)
Net Cash Used by Financing Activities	(168.8)	(169.0)
Net Increase (Decrease) in Cash and Bank Deposits	(75.3)	19.7
Cash and Bank Deposits at Beginning of Year	197.0	84.1
Cash and Bank Deposits at End of Period	$ 121.7	$ 103.8