Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Activities
Net income	$ 155.9	$ 143.1	$ 151.3
Total Discontinued Operations, Net of Taxes	0.0	0.0	1.1
Income from continuing operations	155.9	143.1	150.2
Adjustments to reconcile income to net cash provided by operating activities:
Depreciation	371.3	378.4	342.8
Gains on sales of assets	(121.2)	(99.4)	(39.5)
Asset Impairment Charges	48.9	2.4	0.3
Employee benefit plans	1.8	8.8	6.9
Share-based Payment Arrangement, Noncash Expense	12.7	17.4	15.6
Deferred income taxes	36.3	34.2	29.1
Share of affiliates’ earnings, net of dividends	12.7	(1.2)	(62.2)
Other	15.1	23.5	(6.4)
Net cash provided by operating activities	533.5	507.2	436.8
Investing Activities
Additions to operating assets and facilities	(1,255.8)	(1,130.1)	(860.8)
Acquisition of new businesses	0.0	(1.4)	(203.2)
Investments in affiliates	0.0	(0.4)	0.0
Portfolio investments and capital additions	(1,255.8)	(1,131.9)	(1,064.0)
Portfolio proceeds	269.6	187.1	131.1
Proceeds from sales of other assets	31.1	54.7	26.0
Payments to Acquire Short-Term Investments	(148.5)	0.0	0.0
Payments for (Proceeds from) Other Investing Activities	30.1	(27.6)	2.0
Net cash used in investing activities	(1,073.5)	(917.7)	(904.9)
Financing Activities
Net proceeds from issuances of debt (original maturities longer than 90 days)	848.3	1,491.9	1,586.5
Repayments of debt (original maturities longer than 90 days)	(250.0)	(884.0)	(1,100.0)
Net increase (decrease) in debt with original maturities of 90 days or less	0.0	(4.1)	6.4
Payments on capital lease obligations	(1.5)	(77.2)	(40.0)
Stock repurchases	(47.2)	(13.1)	0.0
Dividends	(76.6)	(74.3)	(71.0)
Other (add shares used to pay taxes)	31.4	23.9	(26.3)
Net cash (used in) provided by financing activities	504.4	463.1	355.6
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations	(4.9)	(1.8)	(0.1)
Net Cash Used in Operating Activities	0.0	0.0	(8.5)
Net Cash Provided by Investing Activities (1)	0.0	1.1	240.9
Net Cash Provided by Financing Activities	0.0	0.0	21.8
Cash Provided by Discontinued Operations, Net	0.0	1.1	254.2
Net (decrease) increase in Cash, Cash Equivalents, and Restricted Cash during the year	(40.5)	51.9	141.6
Cash, Cash Equivalents, and Restricted Cash at beginning of period	344.5	292.6	151.0
Cash, Cash Equivalents, and Restricted Cash at end of period	$ 304.0	$ 344.5	$ 292.6