Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Operating activities:
Net income	$ 26.3	$ 1.9	$ 35.9	$ 1.3	$ 36.7	$ 42.0
(Income) loss from discontinued operations, net of income taxes					(13.7)	24.3
Loss on sale of discontinued operations, net of benefit for income taxes of $—, $—, $1.4, and $—	0.0		0.0		5.7	0.0
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and amortization					206.0	200.4
Stock-based compensation expense					16.7	15.2
Provision (benefit) for deferred income taxes	11.2		7.8		16.2	3.7
Net gains on lease portfolio sales, excluding sales-type leases					(71.7)	(45.7)
Gains on dispositions of property and other assets					(12.0)	(16.4)
Gains on insurance recoveries from property damage					(7.5)	(4.7)
Non-cash interest expense					10.2	10.3
Loss on extinguishment of debt	0.0		0.0		1.5	11.7
Other					(4.8)	6.9
Changes in operating assets and liabilities:
(Increase) decrease in receivables					(51.9)	(31.5)
(Increase) decrease in income tax receivable					(5.6)	249.8
(Increase) decrease in inventories					(253.6)	(64.2)
(Increase) decrease in other assets					(19.9)	6.7
Increase (decrease) in accounts payable					78.9	43.7
Increase (decrease) in accrued liabilities					(4.6)	14.7
Increase (decrease) in other liabilities					(6.6)	0.5
Net cash provided by (used in) operating activities – continuing operations					(52.6)	418.8
Net cash provided by (used in) operating activities – discontinued operations					(15.4)	8.4
Net cash provided by (used in) operating activities					(68.0)	427.2
Investing activities:
Proceeds from dispositions of property and other assets					33.2	34.3
Lease portfolio sales					514.8	404.5
Capital expenditures – leasing					691.1	363.9
Capital expenditures – manufacturing and other					(25.7)	(16.9)
Acquisitions, net of cash acquired					(9.4)	(16.5)
Proceeds from insurance recoveries					7.6	6.5
Equity investments					15.5	0.2
Net Cash Provided by (Used in) Investing Activities, Continuing Operations					(186.1)	47.8
Net cash provided by (used in) investing activities					(188.8)	43.6
Financing activities:
Payments to retire debt					(1,351.5)	(2,256.8)
Proceeds from issuance of debt					1,664.5	2,393.7
Shares repurchased					(36.8)	(406.5)
Dividends paid to common shareholders					(58.3)	(68.5)
Purchase of shares to satisfy employee tax on vested stock					(5.6)	(9.2)
Distributions to noncontrolling interest					(19.2)	(6.8)
Net cash provided by (used in) financing activities					193.1	(354.1)
Net increase (decrease) in cash, cash equivalents, and restricted cash					(63.7)	116.7
Cash, cash equivalents, and restricted cash at beginning of period		$ 302.4		$ 228.4	302.4	228.4	$ 228.4
Cash, cash equivalents, and restricted cash at end of period	$ 238.7		$ 345.1		238.7	345.1	$ 302.4
Proceeds from Sale of Discontinued Operations, Net of Cash Divested
Investing activities:
Cash Provided by (Used in) Investing Activities, Discontinued Operations					(2.7)	0.0
Other Investing Activities
Investing activities:
Cash Provided by (Used in) Investing Activities, Discontinued Operations					$ 0.0	$ (4.2)