Financial Statements for Guarantors of the Senior Notes (Details 3) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2017		Jun. 30, 2016	Jun. 30, 2017		Jun. 30, 2016
Operating activities:
Net income	$ 54.0		$ 98.8	$ 105.7		$ 200.9
Equity in earnings of subsidiaries, net of taxes	0.0		0.0	0.0		0.0
Other				230.4		285.5
Net cash provided (required) by operating activities				336.1		486.4
Investing activities:
(Increase) decrease in short-term marketable securities				55.1		(115.1)
Proceeds from dispositions of property and other assets				6.0		4.1
Proceeds from railcar lease fleet sales owned more than one year				92.4		37.7
Capital expenditures – leasing				(271.6)		(346.0)
Capital expenditures – manufacturing and other				(43.4)		(79.8)
Acquisitions, net of cash acquired				(5.3)		0.0
(Increase) decrease in investment in partially-owned subsidiaries				0.0		0.0
Other				(2.1)		2.3
Net cash provided (required) by investing activities				(168.9)		(496.8)
Financing activities:
Excess tax benefits from stock-based compensation				0.0		0.6
Payments to retire debt				(98.3)		(77.6)
Proceeds from issuance of debt				299.4		0.0
(Increase) decrease in restricted cash				(16.6)		12.5
Shares repurchased				(41.9)		(34.7)
Dividends paid to common shareholders				(33.5)		(33.4)
Purchase of shares to satisfy employee tax on vested stock				(14.0)		(16.1)
Distributions to noncontrolling interest				(16.9)		(10.9)
Distributions to controlling interest in partially-owned subsidiaries				0.0		0.0
Change in intercompany financing between entities				0.0		0.0
Other				(0.1)		(2.0)
Net cash provided (required) by financing activities				78.1		(161.6)
Net decrease in cash and cash equivalents				245.3		(172.0)
Cash and cash equivalents at beginning of period				563.4		786.0
Cash and cash equivalents at end of period	808.7	[1]	614.0	808.7	[1]	614.0
Reportable legal entities | Parent
Operating activities:
Net income	51.1		94.6	97.1		191.8
Equity in earnings of subsidiaries, net of taxes	(103.1)		(105.9)	(162.3)		(227.8)
Other				(11.4)		48.8
Net cash provided (required) by operating activities				(76.6)		12.8
Investing activities:
(Increase) decrease in short-term marketable securities				55.1		(115.1)
Proceeds from dispositions of property and other assets				0.0		0.0
Proceeds from railcar lease fleet sales owned more than one year				0.0		0.0
Capital expenditures – leasing				0.0		0.0
Capital expenditures – manufacturing and other				(5.0)		(8.5)
Acquisitions, net of cash acquired				0.0		0.0
(Increase) decrease in investment in partially-owned subsidiaries				0.0		0.0
Other				0.0		0.0
Net cash provided (required) by investing activities				50.1		(123.6)
Financing activities:
Excess tax benefits from stock-based compensation				0.0		0.6
Payments to retire debt				0.0		0.0
Proceeds from issuance of debt				0.0		0.0
(Increase) decrease in restricted cash				0.0		0.0
Shares repurchased				(41.9)		(34.7)
Dividends paid to common shareholders				(33.5)		(33.4)
Purchase of shares to satisfy employee tax on vested stock				(14.0)		(16.1)
Distributions to noncontrolling interest				0.0		0.0
Distributions to controlling interest in partially-owned subsidiaries				0.0		0.0
Change in intercompany financing between entities				362.0		18.7
Other				0.0		0.0
Net cash provided (required) by financing activities				272.6		(64.9)
Net decrease in cash and cash equivalents				246.1		(175.7)
Cash and cash equivalents at beginning of period				537.9		768.3
Cash and cash equivalents at end of period	784.0		592.6	784.0		592.6
Reportable legal entities | Combined Guarantor Subsidiaries
Operating activities:
Net income	81.9		90.6	130.5		198.4
Equity in earnings of subsidiaries, net of taxes	(26.1)		(16.0)	(43.2)		(42.6)
Other				161.9		203.7
Net cash provided (required) by operating activities				249.2		359.5
Investing activities:
(Increase) decrease in short-term marketable securities				0.0		0.0
Proceeds from dispositions of property and other assets				1.0		0.2
Proceeds from railcar lease fleet sales owned more than one year				446.2		27.3
Capital expenditures – leasing				(268.2)		(343.7)
Capital expenditures – manufacturing and other				(7.9)		(8.1)
Acquisitions, net of cash acquired				0.0		0.0
(Increase) decrease in investment in partially-owned subsidiaries				11.2		6.7
Other				0.0		1.5
Net cash provided (required) by investing activities				182.3		(316.1)
Financing activities:
Excess tax benefits from stock-based compensation				0.0		0.0
Payments to retire debt				(1.8)		(1.6)
Proceeds from issuance of debt				0.0		0.0
(Increase) decrease in restricted cash				(0.5)		(3.0)
Shares repurchased				0.0		0.0
Dividends paid to common shareholders				0.0		0.0
Purchase of shares to satisfy employee tax on vested stock				0.0		0.0
Distributions to noncontrolling interest				0.0		0.0
Distributions to controlling interest in partially-owned subsidiaries				0.0		0.0
Change in intercompany financing between entities				(428.3)		(39.2)
Other				0.0		0.0
Net cash provided (required) by financing activities				(430.6)		(43.8)
Net decrease in cash and cash equivalents				0.9		(0.4)
Cash and cash equivalents at beginning of period				5.2		1.7
Cash and cash equivalents at end of period	6.1		1.3	6.1		1.3
Reportable legal entities | Combined Non-Guarantor Subsidiaries
Operating activities:
Net income	29.6		32.5	58.2		74.9
Equity in earnings of subsidiaries, net of taxes	0.0		0.0	0.0		0.0
Other				88.5		45.8
Net cash provided (required) by operating activities				146.7		120.7
Investing activities:
(Increase) decrease in short-term marketable securities				0.0		0.0
Proceeds from dispositions of property and other assets				5.0		3.9
Proceeds from railcar lease fleet sales owned more than one year				9.6		10.4
Capital expenditures – leasing				(366.8)		(2.3)
Capital expenditures – manufacturing and other				(30.5)		(63.2)
Acquisitions, net of cash acquired				(5.3)		0.0
(Increase) decrease in investment in partially-owned subsidiaries				0.0		0.0
Other				(2.1)		0.8
Net cash provided (required) by investing activities				(390.1)		(50.4)
Financing activities:
Excess tax benefits from stock-based compensation				0.0		0.0
Payments to retire debt				(96.5)		(76.0)
Proceeds from issuance of debt				299.4		0.0
(Increase) decrease in restricted cash				(18.5)		6.3
Shares repurchased				0.0		0.0
Dividends paid to common shareholders				0.0		0.0
Purchase of shares to satisfy employee tax on vested stock				0.0		0.0
Distributions to noncontrolling interest				(16.9)		(10.9)
Distributions to controlling interest in partially-owned subsidiaries				(11.2)		(6.7)
Change in intercompany financing between entities				83.2		13.9
Other				(0.1)		(2.0)
Net cash provided (required) by financing activities				239.4		(75.4)
Net decrease in cash and cash equivalents				(4.0)		(5.1)
Cash and cash equivalents at beginning of period				51.3		51.1
Cash and cash equivalents at end of period	47.3		46.0	47.3		46.0
Eliminations
Operating activities:
Net income	(108.6)		(118.9)	(180.1)		(264.2)
Equity in earnings of subsidiaries, net of taxes	129.2		121.9	205.5		270.4
Other				(8.6)		(12.8)
Net cash provided (required) by operating activities				16.8		(6.6)
Investing activities:
(Increase) decrease in short-term marketable securities				0.0		0.0
Proceeds from dispositions of property and other assets				0.0		0.0
Proceeds from railcar lease fleet sales owned more than one year				(363.4)		0.0
Capital expenditures – leasing				363.4		0.0
Capital expenditures – manufacturing and other				0.0		0.0
Acquisitions, net of cash acquired				0.0		0.0
(Increase) decrease in investment in partially-owned subsidiaries				(11.2)		(6.7)
Other				0.0		0.0
Net cash provided (required) by investing activities				(11.2)		(6.7)
Financing activities:
Excess tax benefits from stock-based compensation				0.0		0.0
Payments to retire debt				0.0		0.0
Proceeds from issuance of debt				0.0		0.0
(Increase) decrease in restricted cash				2.4		9.2
Shares repurchased				0.0		0.0
Dividends paid to common shareholders				0.0		0.0
Purchase of shares to satisfy employee tax on vested stock				0.0		0.0
Distributions to noncontrolling interest				0.0		0.0
Distributions to controlling interest in partially-owned subsidiaries				11.2		6.7
Change in intercompany financing between entities				(16.9)		6.6
Other				0.0		0.0
Net cash provided (required) by financing activities				(3.3)		22.5
Net decrease in cash and cash equivalents				2.3		9.2
Cash and cash equivalents at beginning of period				(31.0)		(35.1)
Cash and cash equivalents at end of period	$ (28.7)		$ (25.9)	$ (28.7)		$ (25.9)

[1] (unaudited)