Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Cash and cash equivalents	$ 105.7	$ 79.6
Receivables, net of allowance of $15.9 and $16.0	363.5	323.5
Income tax receivable	5.2	7.8
Raw materials and supplies	419.4	423.6
Work in process	142.4	164.2
Finished goods	122.5	41.6
Inventories:	684.3	629.4
Restricted cash, including partially-owned subsidiaries of $30.6 and $74.4	129.4	214.7
Property, plant, and equipment, at cost, including partially-owned subsidiaries of $1,922.5 and $1,917.6	9,539.6	9,272.6
Less accumulated depreciation, including partially-owned subsidiaries of $644.7 and $599.0	2,534.8	2,385.8
Property, Plant and Equipment, Net	7,004.8	6,886.8
Goodwill	221.5	195.9
Other assets	392.1	386.6
Total assets	8,906.5	8,724.3
Accounts payable	305.3	287.5
Accrued liabilities	302.3	261.0
Debt, Long-Term and Short-Term, Combined Amount	5,754.2	5,607.6
Deferred income taxes	1,103.5	1,134.7
Other liabilities	165.7	163.9
Total liabilities	7,631.0	7,454.7
Preferred stock – 1.5 shares authorized and unissued	0.0	0.0
Common stock – shares authorized at December 31, 2023 and 2022 – 400.0; shares issued and outstanding at December 31, 2023 – 81.8; at December 31, 2022 – 81.1	0.8	0.8
Capital in excess of par value	15.4	0.0
Retained earnings	1,010.5	992.6
Accumulated other comprehensive income	11.0	19.7
Treasury stock – shares at December 31, 2023 – 0.0; at December 31, 2022 – 0.0	0.6	0.7
Stockholders' Equity Attributable to Parent	1,037.1	1,012.4
Noncontrolling interest	238.4	257.2
Total stockholders' equity	1,275.5	1,269.6
Total liabilities and stockholders' equity	8,906.5	8,724.3
Recourse
Debt, Long-Term and Short-Term, Combined Amount	794.6	624.1
Nonrecourse
Debt, Long-Term and Short-Term, Combined Amount	4,959.6	4,983.5
Wholly Owned Subsidiaries [Member] | Nonrecourse
Debt, Long-Term and Short-Term, Combined Amount	3,819.2	3,800.7
Partially-Owned Subsidiaries [Member]
Property, plant, and equipment, at cost, including partially-owned subsidiaries of $1,922.5 and $1,917.6	1,922.5	1,917.6
Less accumulated depreciation, including partially-owned subsidiaries of $644.7 and $599.0	644.7	599.0
Partially-Owned Subsidiaries [Member] | Nonrecourse
Debt, Long-Term and Short-Term, Combined Amount	$ 1,140.4	$ 1,182.8