Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023
Net Income (Loss)		$ 70.2	$ (80.1)
Adjustments to Reconcile Net Income (Loss) to Net Cash Provided by Operating Activities
Net Realized Investment Gains		(6.6)	(6.4)
Gain (Loss) On Asset Impairment Charges		1.5	(2.1)
Depreciation and Amortization of Property, Equipment and Software		11.4	11.9
Amortization of Intangibles Assets Acquired		3.2	4.3
Income from Change in Value of Equity and Convertible Securities		(3.4)	(1.7)
Receivables from Policyholders		4.4	(57.4)
Reinsurance Recoverables		1.8	4.1
Deferred Policy Acquisition Costs		(4.2)	(15.9)
Insurance Reserves		(69.0)	(21.8)
Unearned Premiums		(24.1)	73.6
Income Taxes		26.9	106.2
Other Assets and Liabilities		25.3	(9.6)
Net Cash Provided by Operating Activities		43.0	5.2
Cash Flows from Investing Activities:
Proceeds from the Sales, Calls and Maturities of Fixed Maturities		323.2	154.0
Proceeds from the Sales or Paydowns of Investments:
Equity Securities		13.4	19.5
Mortgage Loans		34.1	18.6
Other Investments		3.5	2.6
Purchases of Investments:
Fixed Maturities		(286.9)	(293.3)
Equity Securities		(3.1)	(13.2)
Real Estate Investments		(0.2)	(0.2)
Mortgage Loans		(27.4)	(13.3)
Other Investments		9.6	4.7
Net Sales of Short-term Investments		2.4	0.7
Acquisition of Software and Long-lived Assets		(15.3)	(10.0)
Settlement Proceeds from Company-Owned Life Insurance		4.9	0.0
Other		0.3	1.1
Net Cash Provided by (Used in) Investing Activities		39.3	(138.2)
Cash Flows from Financing Activities:
Proceeds from Policyholder Contract Obligations		25.5	89.3
Repayment of Policyholder Contract Obligations		(20.6)	(90.0)
Proceeds from Shares Issued under Employee Stock Purchase Plan		0.9	1.0
Dividends Paid		(19.5)	(19.4)
Other		(6.0)	0.3
Net Cash Used in Financing Activities		(19.7)	(18.8)
Net increase (decrease) in cash	[1]	62.6		$ (151.8)
Cash, Beginning of Year	[1]	64.1	212.4	$ 212.4
Cash, End of Period	[1]	126.7	60.6
Cash (paid) received during the year for:
Interest		(20.0)	(24.8)
Taxes		(10.4)	(124.7)
Operating Leases		(5.7)	(6.1)
Non-Cash Activities:
Right-of-Use Assets Obtained in Exchange for New Operating Lease Liabilities		0.9	1.4
Equity Method Limited Liability Investments
Adjustments to Reconcile Net Income (Loss) to Net Cash Provided by Operating Activities
Income from Change in Value of Alternative Energy Partnership Investments		(6.0)	(0.8)
Alternative Energy Partnership Investments
Adjustments to Reconcile Net Income (Loss) to Net Cash Provided by Operating Activities
Income from Change in Value of Alternative Energy Partnership Investments		$ 0.4	$ 0.7

[1] 1Includes amounts attributable to Kemper Reciprocal reported as non-controlling interest.