Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2022	Sep. 30, 2022
Assets, Current [Abstract]
Cash and cash equivalents	$ 21.0	$ 23.4
Receivables, net	56.9	66.1
Inventories, net	31.2	29.4
Prepaid expenses and other current assets	38.7	38.0
Current assets held for sale	1,553.6	1,464.2
Total current assets	1,701.4	1,621.1
Noncurrent assets
Property, plant and equipment, net	693.3	668.6
Operating lease assets	253.5	248.1
Goodwill and intangibles, net	668.2	663.1
Deferred tax assets	82.2	61.6
Other noncurrent assets	152.9	154.3
Total noncurrent assets	1,850.1	1,795.7
Total assets	3,551.5	3,416.8
Current liabilities
Current portion of long-term debt	224.5	162.5
Trade and other payables	46.6	45.0
Accrued expenses and other liabilities	175.2	172.6
Current liabilities held for sale	478.1	539.3
Total current liabilities	924.4	919.4
Noncurrent liabilities
Long-term debt	1,656.1	1,525.1
Employee benefit obligations	200.5	199.4
Operating lease liabilities	234.5	229.2
Other noncurrent liabilities	246.7	237.1
Total noncurrent liabilities	2,337.8	2,190.8
Commitments and contingencies
Stockholders’ equity
Preferred stock, no par value, 40 shares authorized; no shares issued and outstanding	0.0	0.0
Common stock, par value $0.01 per share, 400 shares authorized; 174 and 176 shares issued and outstanding at December 31, 2022 and September 30, 2021, respectively	1.7	1.8
Paid-in capital	40.8	44.1
Retained earnings	254.6	282.0
Accumulated other comprehensive loss	(7.8)	(21.3)
Total stockholders’ equity	289.3	306.6
Total liabilities and stockholders’ equity	$ 3,551.5	$ 3,416.8