Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities
Net income	$ 110.9	$ 130.5
Adjustments to reconcile income to net cash provided by operating activities:
Depreciation	155.8	151.4
Change in accrued operating lease expense	(25.3)	(8.0)
Gains on sales of assets	(39.5)	(28.4)
Deferred income taxes	30.4	48.3
Change in income taxes payable	(4.9)	(9.0)
Share of affiliates’ earnings, net of dividends	(18.3)	(13.8)
Other	15.1	(29.7)
Net cash provided by operating activities	224.2	241.3
Investing Activities
Additions to operating assets and facilities	(295.3)	(322.2)
Purchases of leased-in assets	(79.3)	(103.2)
Portfolio proceeds	99.1	123.8
Proceeds from sales of other assets	14.9	14.2
Sale Leaseback Transaction, Net Proceeds, Investing Activities	90.7	0.0
Net cash used in investing activities	(169.9)	(287.4)
Financing Activities
Net proceeds from issuances of debt (original maturities longer than 90 days)	297.6	460.3
Repayments of debt (original maturities longer than 90 days)	(301.5)	(356.0)
Net increase (decrease) in debt with original maturities of 90 days or less	11.5	21.0
Stock repurchases	(50.0)	(70.0)
Dividends	(35.2)	(34.7)
Other	(2.7)	(4.3)
Net cash (used in) provided by financing activities	(80.3)	16.3
Effect of Exchange Rate Changes on Cash and Cash Equivalents	2.9	(0.4)
Net (decrease) increase in Cash and Cash Equivalents during the period	(23.1)	(30.2)
Cash, Cash Equivalents, and Restricted Cash at beginning of period	311.1	219.7
Cash, Cash Equivalents, and Restricted Cash at end of period	$ 288.0	$ 189.5