Condensed Consolidated Statements of Stockholders' Deficit - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Common Stock in Treasury	Accumulated Other Comprehensive Loss, Net of Taxes
Balance at beginning of period (unaudited) at Dec. 31, 2017	$ 152.3	$ 23.0	$ 1,939.6	$ 1,735.2	$ (2,700.6)	$ (844.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effect of share-based incentive compensation	8.5	0.2	14.7		(6.4)
Stock issued for profit sharing contribution paid in stock	24.5		0.7		23.8
Repurchases of common stock	(401.8)		80.0		(481.8)
Recognition of pension items, net of taxes	1.1					1.1
Foreign currency translation adjustments	(28.7)					(28.7)
Unrealized (loss) gain on derivative instruments, net of taxes	13.7					13.7
Net earnings (loss)	(86.2)			(86.2)
Dividends on common stock	(52.4)			(52.4)
Balance at end of period (unaudited) at Jun. 30, 2018	(372.4)	23.2	2,035.0	1,593.2	(3,165.0)	(858.8)
Balance at beginning of period (unaudited) at Mar. 31, 2018	(364.8)	23.2	2,025.8	1,502.9	(3,090.9)	(825.8)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effect of share-based incentive compensation	8.4		8.5		(0.1)
Stock issued for profit sharing contribution paid in stock	3.8		0.7		3.1
Repurchases of common stock	(77.1)				(77.1)
Recognition of pension items, net of taxes	0.5					0.5
Foreign currency translation adjustments	(57.1)					(57.1)
Unrealized (loss) gain on derivative instruments, net of taxes	23.6					23.6
Net earnings (loss)	114.4			114.4
Dividends on common stock	(25.8)			(25.8)
Balance at end of period (unaudited) at Jun. 30, 2018	(372.4)	23.2	2,035.0	1,593.2	(3,165.0)	(858.8)
Balance at beginning of period (unaudited) at Dec. 31, 2018	(348.6)	23.2	2,049.6	1,835.5	(3,336.5)	(920.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effect of share-based incentive compensation	2.9	0.0	2.9
Stock issued for profit sharing contribution paid in stock	21.9		0.5		21.4
Repurchases of common stock	(67.3)				(67.3)
Recognition of pension items, net of taxes	1.7					1.7
Foreign currency translation adjustments	6.3					6.3
Unrealized (loss) gain on derivative instruments, net of taxes	1.0					1.0
Net earnings (loss)	90.7			90.7
Dividends on common stock	(49.8)			(49.8)
Balance at end of period (unaudited) at Jun. 30, 2019	(341.2)	23.2	2,053.0	1,876.4	(3,382.4)	(911.4)
Balance at beginning of period (unaudited) at Mar. 31, 2019	(292.4)	23.2	2,047.8	1,868.0	(3,332.8)	(898.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Effect of share-based incentive compensation	5.2		5.2
Repurchases of common stock	(49.6)				(49.6)
Recognition of pension items, net of taxes	0.9					0.9
Foreign currency translation adjustments	(9.2)					(9.2)
Unrealized (loss) gain on derivative instruments, net of taxes	(4.5)					(4.5)
Net earnings (loss)	33.2			33.2
Dividends on common stock	(24.8)			(24.8)
Balance at end of period (unaudited) at Jun. 30, 2019	$ (341.2)	$ 23.2	$ 2,053.0	$ 1,876.4	$ (3,382.4)	$ (911.4)