Consolidated Balance Sheets - USD ($) shares in Millions, $ in Millions	Mar. 31, 2024	Dec. 31, 2023
ASSETS
Cash and cash equivalents	$ 118.8	$ 105.7
Receivables, net of allowance	484.0	363.5
Income tax receivable	4.9	5.2
Inventories:
Raw materials and supplies	397.2	419.4
Work in process	174.8	142.4
Finished goods	71.1	122.5
Inventory, Net	643.1	684.3
Restricted cash, including partially-owned subsidiaries of $30.0 and $30.6	116.3	129.4
Property, plant, and equipment, at cost, including partially-owned subsidiaries of $1,921.7 and $1,922.5	9,658.2	9,539.6
Less accumulated depreciation, including partially-owned subsidiaries of $656.8 and $644.7	2,598.6	2,534.8
Property, Plant and Equipment, Net	7,059.6	7,004.8
Goodwill	221.5	221.5
Other assets	431.6	392.1
Total assets	9,079.8	8,906.5
Liabilities and Equity [Abstract]
Accounts payable	335.9	305.3
Accrued liabilities	328.3	302.3
Debt:	5,867.0	5,754.2
Deferred income taxes	1,104.1	1,103.5
Other liabilities	156.0	165.7
Total liabilities	$ 7,791.3	$ 7,631.0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Preferred Stock, Shares Authorized	1.5	1.5
Preferred Stock, Shares Subscribed but Unissued	1.5	1.5
Preferred stock – 1.5 shares authorized and unissued	$ 0.0	$ 0.0
Common Stock, Shares Authorized	400.0	400.0
Common stock – 400.0 shares authorized	$ 0.8	$ 0.8
Capital in excess of par value	20.2	15.4
Retained earnings	1,010.9	1,010.5
Accumulated other comprehensive income	18.4	11.0
Treasury stock	(1.0)	(0.6)
Equity, Attributable to Parent, Total	1,049.3	1,037.1
Noncontrolling interest	239.2	238.4
Total stockholders' equity	1,288.5	1,275.5
Total liabilities and stockholders' equity	9,079.8	8,906.5
Leasing & Services
Inventories:
Goodwill	50.6	50.6
Recourse
Liabilities and Equity [Abstract]
Debt:	795.0	794.6
Nonrecourse
Liabilities and Equity [Abstract]
Debt:	5,072.0	4,959.6
Wholly-owned subsidiaries | Nonrecourse
Liabilities and Equity [Abstract]
Debt:	3,946.0	3,819.2
Wholly-owned subsidiaries | Nonrecourse | Leasing & Services
Liabilities and Equity [Abstract]
Debt:	3,946.0	3,819.2
Partially-owned subsidiaries | Leasing & Services
Inventories:
Restricted cash, including partially-owned subsidiaries of $30.0 and $30.6	30.0	30.6
Property, plant, and equipment, at cost, including partially-owned subsidiaries of $1,921.7 and $1,922.5	1,921.7	1,922.5
Less accumulated depreciation, including partially-owned subsidiaries of $656.8 and $644.7	656.8	644.7
Partially-owned subsidiaries | Nonrecourse
Liabilities and Equity [Abstract]
Debt:	1,126.0	1,140.4
Partially-owned subsidiaries | Nonrecourse | Leasing & Services
Liabilities and Equity [Abstract]
Debt:	$ 1,126.0	$ 1,140.4