Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Operating Activities
Net Income (Loss) Attributable to Parent	$ 236,300,000	$ 207,700,000
Adjustments to reconcile income to net cash provided by operating activities:
Depreciation, Depletion and Amortization	335,000,000.0	311,800,000
Net gains on sales of assets	(100,200,000)	(110,000,000.0)
Asset impairments	3,600,000	0
Deferred income taxes	44,100,000	42,000,000.0
Share of affiliates’ earnings, net of dividends	(81,100,000)	(58,700,000)
Changes in working capital items	66,100,000	3,300,000
Net cash provided by operating activities	503,800,000	396,100,000
Investing Activities
Portfolio investments and capital additions	(877,000,000.0)	(1,325,100,000)
Portfolio proceeds	211,400,000	171,700,000
Purchases of assets previously leased	(15,000,000.0)	0
Proceeds from sales of other assets	25,700,000	20,200,000
Other	2,500,000	1,800,000
Net cash used in investing activities	(652,400,000)	(1,131,400,000)
Financing Activities
Net proceeds from issuances of debt with original maturities longer than 90 days	1,026,200,000	1,297,000,000
Repayments of debt with original maturities longer than 90 days	(629,900,000)	(413,500,000)
Net increase in debt with original maturities of 90 days or less	105,300,000	0
Stock repurchases	(18,600,000)	(21,800,000)
Dividends	(67,800,000)	(63,900,000)
Purchases of assets previously leased	0	(30,400,000)
Other	21,000,000.0	21,700,000
Net cash provided by financing activities	436,200,000	789,100,000
Effect of Exchange Rate Changes on Cash, Cash Equivalents, and Restricted Cash	7,000,000.0	(800,000)
Net increase in Cash, Cash Equivalents, and Restricted Cash during the period	294,600,000	53,000,000.0
Cash, Cash Equivalents, and Restricted Cash at beginning of the period	401,800,000	450,800,000
Cash, Cash Equivalents, and Restricted Cash at end of the period	696,400,000	503,800,000
Non-Cash Financing Transactions
Non-cash financing lease transactions	$ 0	$ 30,100,000