Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Assets
Cash and Cash Equivalents	$ 317.5	$ 303.7
Restricted Cash	0.2	0.3
Receivables
Rent and other receivables	70.0	71.4
Finance leases (as lessor)	127.9	96.5
Less: allowance for losses	(5.9)	(5.9)
Receivables, net	192.0	162.0
Property, Plant and Equipment, Net [Abstract]
Operating Assets and Facilities	12,392.5	11,675.0
Less: allowance for depreciation	(3,521.8)	(3,424.7)
Operating assets and facilities, net	8,870.7	8,250.3
Lease Assets (as lessee)
Right-of-use assets, net of accumulated depreciation	228.4	243.5
Lease assets	228.4	243.5
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	611.7	575.1
Goodwill	119.0	117.2
Other Assets	250.6	271.4
Total Assets	10,590.1	10,072.0
Liabilities and Shareholders’ Equity
Accounts Payable and Accrued Expenses	202.8	202.2
Debt
Commercial paper and borrowings under bank credit facilities	10.9	17.3
Recourse	6,785.6	6,431.5
Commercial paper and borrowings under bank credit facilities	6,796.5	6,448.8
Lease, Liability [Abstract]
Operating leases	241.1	257.9
Lease obligations	241.1	257.9
Deferred Income Tax Liabilities, Net	1,066.6	1,031.5
Other Liabilities	104.2	102.0
Total Liabilities	8,411.2	8,042.4
Shareholders’ Equity
Common stock, $0.625 par value: Authorized shares — 120,000,000 Issued shares — 67,325,950 and 67,083,149 Outstanding shares — 37,632,377 and 37,895,641	42.5	42.4
Additional paid in capital	807.8	792.2
Retained earnings	2,931.6	2,831.5
Accumulated other comprehensive loss	$ (178.1)	$ (211.6)
Treasury Stock, Common, Shares	33,307,666	33,307,666
Treasury stock at cost (29,693,573 and 29,187,508 shares)	$ (1,424.9)	$ (1,424.9)
Total Shareholders’ Equity	2,178.9	2,029.6
Total Liabilities and Shareholders’ Equity	$ 10,590.1	$ 10,072.0
Common Stock, Shares Authorized	120,000,000
Common Stock, Par or Stated Value Per Share	$ 0.625
Common Stock, Shares, Outstanding	35,448,375	35,268,308
Short-Term Investments	$ 0.0	$ 148.5