CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDER'S EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]
Common stock, shares issued		85.5
Common Stock, Value, Issued		$ 85.5
Retained earnings	$ 2,461.6
Total accumulated other comprehensive loss				$ (321.3)
Noncontrolling interests					$ 4.9
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	2,230.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Activity from Stock Incentive Plans		0.3
Share Repurchases		(3.0)
Shares withheld related to net share settlement of stock incentive plans		(0.1)
Net income	369.4	$ 0.0	$ 367.0	0.0	2.4
Activity from stock incentive plans	20.0	0.3	19.7	0.0	0.0
Share repurchases	(245.3)	(3.0)	(242.3)	0.0	0.0
Shares withheld related to net share settlement of stock incentive plans	8.8	0.1	8.7	0.0	0.0
Dividends Declared	(87.7)	0.0	(87.7)	0.0	0.0
Dividend to Noncontrolling Interest	(0.5)	0.0	0.0	0.0	(0.5)
Purchase of noncontrolling interest	2.7	0.0	0.0	0.0	2.7
Net change in postretirement benefit plans, net of tax impacts of $(1.5), $1.7, and $(7.6), respectively	44.4			44.4
Net foreign currency translation adjustment	(67.4)	0.0	0.0	(67.4)	0.0
Other	(0.1)	$ 0.0	0.1	0.0	(0.2)
Common stock, shares issued		82.7
Common Stock, Value, Issued		$ 82.7
Retained earnings			2,509.7
Total accumulated other comprehensive loss				(344.3)
Noncontrolling interests					9.3
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	2,257.4
Activity from Stock Incentive Plans		0.2
Share Repurchases		(0.7)
Shares withheld related to net share settlement of stock incentive plans		(0.1)
Net income	413.8	$ 0.0	410.5	0.0	3.3
Activity from stock incentive plans	20.8	0.2	20.6	0.0	0.0
Share repurchases	(60.5)	(0.7)	(59.8)	0.0	0.0
Shares withheld related to net share settlement of stock incentive plans	7.2	0.1	7.1	0.0	0.0
Dividends Declared	(95.9)	0.0	(95.9)	0.0	0.0
Dividend to Noncontrolling Interest	(1.7)	0.0	0.0	0.0	(1.7)
Net change in postretirement benefit plans, net of tax impacts of $(1.5), $1.7, and $(7.6), respectively	(5.2)			(5.2)
Net foreign currency translation adjustment	$ 17.6	$ 0.0	0.0	17.6	0.0
Common stock, shares issued	82.1	82.1
Common Stock, Value, Issued	$ 82.1	$ 82.1
Retained earnings	2,778.0		2,778.0
Total accumulated other comprehensive loss	(331.9)			(331.9)
Noncontrolling interests	10.9				10.9
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	2,539.1
Activity from Stock Incentive Plans		0.3
Share Repurchases		(0.8)
Shares withheld related to net share settlement of stock incentive plans		(0.1)
Net income	521.7	$ 0.0	518.3	0.0	3.4
Activity from stock incentive plans	26.4	0.3	26.1	0.0	0.0
Share repurchases	(104.8)	(0.8)	(104.0)	0.0	0.0
Shares withheld related to net share settlement of stock incentive plans	14.2	0.1	14.1	0.0	0.0
Dividends Declared	(104.8)	0.0	(104.8)	0.0	0.0
Dividend to Noncontrolling Interest	(2.3)	0.0	0.0	0.0	(2.3)
Acquisition of noncontrolling interest	(5.0)	0.0	(0.1)	0.0	(4.9)
Net change in postretirement benefit plans, net of tax impacts of $(1.5), $1.7, and $(7.6), respectively	4.8			4.8
Net foreign currency translation adjustment	(91.2)	0.0	0.0	(91.2)	0.0
Other	$ (0.1)	$ 0.0	0.0	0.0	(0.1)
Common stock, shares issued	81.5	81.5
Common Stock, Value, Issued	$ 81.5	$ 81.5
Retained earnings	3,099.4		$ 3,099.4
Total accumulated other comprehensive loss	(418.3)			$ (418.3)
Noncontrolling interests	7.0				$ 7.0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 2,769.6