Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Statement of Cash Flows [Abstract]
Net Income	$ 79,100,000	$ 78,600,000
Adjustments to reconcile income to net cash provided by operating activities:
Depreciation, Depletion and Amortization	174,700,000	108,600,000
Net gains on sales of assets	(52,600,000)	(36,900,000)
Asset impairments	1,700,000	3,600,000
Deferred income taxes	19,900,000	15,800,000
Share of affiliates’ earnings, net of dividends	(20,800,000)	(25,100,000)
Changes in working capital items	(2,900,000)	(20,400,000)
Net cash provided by operating activities	199,100,000	124,200,000
Investing Activities
Portfolio investments and capital additions	(4,520,000,000)	(296,300,000)
Portfolio proceeds	152,400,000	68,300,000
Purchases of assets previously leased	(3,800,000)	(15,000,000.0)
Proceeds from sales of other assets	11,500,000	7,100,000
Other	1,200,000	1,200,000
Net cash used in investing activities	(4,358,700,000)	(234,700,000)
Financing Activities
Net proceeds from issuances of debt with original maturities longer than 90 days	973,700,000	879,800,000
Repayments of debt with original maturities longer than 90 days	(1,000,100,000)	(406,600,000)
Net (decrease) increase in debt with original maturities of 90 days or less	(23,400,000)	4,200,000
Stock repurchases	(3,800,000)	(1,900,000)
Dividends	(25,200,000)	(23,500,000)
Other	(3,800,000)	9,600,000
Net cash (used in) provided by financing activities	(82,600,000)	461,600,000
Effect of Exchange Rate Changes on Cash, Cash Equivalents, and Restricted Cash	(1,700,000)	4,700,000
Net (decrease) increase in Cash, Cash Equivalents, and Restricted Cash during the period	(4,243,900,000)	355,800,000
Cash, Cash Equivalents, and Restricted Cash at beginning of the period	4,984,900,000	401,800,000
Cash, Cash Equivalents, and Restricted Cash at end of the period	$ 741,000,000.0	$ 757,600,000