Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Activities
Net income	$ 143.1	$ 151.3	$ 211.2
Total Discontinued Operations, Net of Taxes	0.0	1.1	30.4
Income from continuing operations	143.1	150.2	180.8
Adjustments to reconcile income to net cash provided by operating activities:
Depreciation	378.4	342.8	332.7
Gains on sales of assets	(99.4)	(39.5)	(56.2)
Asset Impairment Charges	2.4	0.3	6.6
Employee benefit plans	8.8	6.9	3.9
Share-based Payment Arrangement, Noncash Expense	17.4	15.6	12.3
Deferred income taxes	34.2	29.1	33.8
Share of affiliates’ earnings, net of dividends	(1.2)	(62.2)	(49.0)
Other	23.5	(6.4)	(39.1)
Net cash provided by operating activities	507.2	436.8	425.8
Investing Activities
Additions to operating assets and facilities	(1,130.1)	(860.8)	(722.8)
Acquisition of new businesses	(1.4)	(203.2)	0.0
Investments in affiliates	(0.4)	0.0	0.0
Portfolio investments and capital additions	(1,131.9)	(1,064.0)	(722.8)
Purchases of leased-in assets	0.0	0.0	(1.0)
Portfolio proceeds	187.1	131.1	250.3
Proceeds from sales of other assets	54.7	26.0	23.0
Payments for (Proceeds from) Other Investing Activities	(27.6)	2.0	2.7
Net cash used in investing activities	(917.7)	(904.9)	(447.8)
Financing Activities
Net proceeds from issuances of debt (original maturities longer than 90 days)	1,491.9	1,586.5	743.0
Repayments of debt (original maturities longer than 90 days)	(884.0)	(1,100.0)	(410.0)
Net increase (decrease) in debt with original maturities of 90 days or less	(4.1)	6.4	(94.6)
Payments on capital lease obligations	(77.2)	(40.0)	(11.3)
Stock repurchases	(13.1)	0.0	(150.0)
Dividends	(74.3)	(71.0)	(69.3)
Other (add shares used to pay taxes)	23.9	(26.3)	59.1
Net cash (used in) provided by financing activities	463.1	355.6	66.9
Effect of Exchange Rate Changes on Cash and Cash Equivalents	(1.8)	(0.1)	(0.5)
Net Cash Used In (Provided By) Operating Activities	0.0	(8.5)	36.8
Net Cash Provided By Investing Activities (1)	1.1	240.9	8.1
Net Cash Provided By (Used In) Financing Activities	0.0	21.8	(45.0)
Cash Provided By (Used In) Discontinued Operations, Net	1.1	254.2	(0.1)
Net increase in Cash, Cash Equivalents, and Restricted Cash during the year	51.9	141.6	44.3
Cash, Cash Equivalents, and Restricted Cash at beginning of period	292.6	151.0	106.7
Cash, Cash Equivalents, and Restricted Cash at end of period	$ 344.5	$ 292.6	$ 151.0