Consolidated Statements of Stockholders' Equity (USD $) In Millions, unless otherwise specified	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Stockholders' Equity Attributable to Parent [Member]	Noncontrolling Interest [Member]	Accelerated Stock Buyback Program [Member]	Accelerated Stock Buyback Program [Member] Common Stock [Member]	Accelerated Stock Buyback Program [Member] Treasury Stock [Member]	Accelerated Stock Buyback Program [Member] Additional Paid-in Capital [Member]	Accelerated Stock Buyback Program [Member] Retained Earnings [Member]	Accelerated Stock Buyback Program [Member] Accumulated Other Comprehensive Income (Loss) [Member]	Accelerated Stock Buyback Program [Member] Stockholders' Equity Attributable to Parent [Member]	Accelerated Stock Buyback Program [Member] Noncontrolling Interest [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2011	$ 1,852.6	$ 305.3	$ (432.8)	$ 586.3	$ 2,097.3	$ (707.0)	$ 1,849.1	$ 3.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	401.3	0	0	0	401.3	0	401.3	0
Foreign Currency Translation	40.6	0	0	0	0	40.6	40.6	0
Unrecognized pension and other postretirement benefit costs, net of tax	(119.8)	0	0	0	0	(119.8)	(119.8)	0
Gain (Loss) Derivatives Instruments, Net of Tax	(2.8)	0	0	0	0	(2.8)	(2.8)	0
Cash dividends on common stock	(125.2)	0	0	0	(125.2)	0	(125.2)	0
Stock-based compensation and other	45.0	4.3	(15.2)	57.8	(1.9)	0	45.0	0
Stock Repurchased and Retired During Period, Value	(91.5)	(4.9)	0	(10.0)	(76.6)	0	(91.5)	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2012	2,000.2	304.7	(448.0)	634.1	2,294.9	(789.0)	1,996.7	3.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	474.6	0	0	0	474.6	0	474.6	0
Foreign Currency Translation	5.0	0	0	0	0	5.0	5.0	0
Unrecognized pension and other postretirement benefit costs, net of tax	137.8	0	0	0	0	137.8	137.8	0
Gain (Loss) Derivatives Instruments, Net of Tax	1.0	0	0	0	0	1.0	1.0	0
Cash dividends on common stock	(174.1)	0	0	0	(174.1)	0	(174.1)	0
Stock-based compensation and other	100.5	6.9	(29.2)	123.0	(0.2)	0	100.5	0
Stock Repurchased and Retired During Period, Value	(119.5)	(4.7)	0	(10.5)	(104.3)	0	(119.5)	0	(350.5)	(9.4)	0	(92.3)	(248.8)	0	(350.5)	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2013	2,075.0	297.5	(477.2)	654.3	2,242.1	(645.2)	2,071.5	3.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	377.8	0	0	0	377.8	0	377.8	0
Foreign Currency Translation	(126.3)	0	0	0	0	(126.3)	(126.3)	0
Unrecognized pension and other postretirement benefit costs, net of tax	(28.4)		0	0	0	(28.4)	(28.4)	0
Gain (Loss) Derivatives Instruments, Net of Tax	5.5	0	0	0	0	5.5	5.5	0
Cash dividends on common stock	(182.5)	0	0	0	(182.5)	0	(182.5)	0
Stock-based compensation and other	97.0	4.5	(15.9)	109.7	(1.3)	0	97.0	0
Stock Repurchased and Retired During Period, Value	(363.2)	(11.3)	0	(27.0)	(324.9)	0	(363.2)	0	0	(2.0)	0	2.0	0	0	0	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2014	$ 1,854.9	$ 288.7	$ (493.1)	$ 739.0	$ 2,111.2	$ (794.4)	$ 1,851.4	$ 3.5