Equity (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Stockholders' Equity Attributable to Noncontrolling Interest	$ 14.4		$ 14.4		$ 14.2
Additional Paid in Capital, Common Stock	887.7		887.7		889.2
Retained Earnings (Accumulated Deficit)	2,358.1		2,358.1		2,004.7
Treasury Stock, Value	112.6		112.6		29.2
Common Stock, Value, Issued	53.1		53.1		53.1
Accumulated Other Comprehensive Income (Loss), Net of Tax	(854.9)		(854.9)		(889.5)
Shareholding pattern
Beginning Balance			2,042.5
Net Income	81.1	112.2	420.5	348.3
Foreign currency translation adjustments	16.5	(77.2)	0.5	(30.7)
Pension and postretirement liability adjustment (net of the income tax benefit of $24.5 million)	12.2	16.4	34.2	34.9
Unrealized loss on marketable securities	(0.2)	0.2	(0.7)	0.5
Change in fair value of derivative financial instruments, net of reclassifications	(0.9)	0.6	0.5	0.7
Dividends - $0.69 per share			(66.8)
Excess tax benefit from stock compensation			9.6
Stock-based compensation expense			13.4
Stock purchased at cost			(112.3)
Stock option exercise activity			12.5
Restricted shares (issued) surrendered			0
Shares surrendered for taxes			(8.1)
Ending Balance	2,345.8		2,345.8
Stated Capital [Member]
Shareholding pattern
Net Income
Foreign currency translation adjustments
Pension and postretirement liability adjustment (net of the income tax benefit of $24.5 million)
Unrealized loss on marketable securities
Change in fair value of derivative financial instruments, net of reclassifications
Dividends - $0.69 per share
Excess tax benefit from stock compensation
Stock-based compensation expense
Stock purchased at cost
Stock option exercise activity
Restricted shares (issued) surrendered
Shares surrendered for taxes
Ending Balance	53.1		53.1
Other Paid-In Capital [Member]
Shareholding pattern
Net Income
Foreign currency translation adjustments
Pension and postretirement liability adjustment (net of the income tax benefit of $24.5 million)
Unrealized loss on marketable securities
Change in fair value of derivative financial instruments, net of reclassifications
Dividends - $0.69 per share
Excess tax benefit from stock compensation			9.6
Stock-based compensation expense			13.4
Stock purchased at cost
Stock option exercise activity			(20.6)
Restricted shares (issued) surrendered			(3.9)
Shares surrendered for taxes
Ending Balance	887.7		887.7
Earnings Invested in the Business [Member]
Shareholding pattern
Net Income			420.2
Foreign currency translation adjustments
Pension and postretirement liability adjustment (net of the income tax benefit of $24.5 million)
Unrealized loss on marketable securities
Change in fair value of derivative financial instruments, net of reclassifications
Dividends - $0.69 per share			(66.8)
Excess tax benefit from stock compensation
Stock-based compensation expense
Stock purchased at cost
Stock option exercise activity
Restricted shares (issued) surrendered
Shares surrendered for taxes
Ending Balance	2,358.1		2,358.1
Accumulated Other Comprehensive (Loss) [Member]
Shareholding pattern
Net Income
Foreign currency translation adjustments			0.5
Pension and postretirement liability adjustment (net of the income tax benefit of $24.5 million)			34.2
Unrealized loss on marketable securities			(0.6)
Change in fair value of derivative financial instruments, net of reclassifications			0.5
Dividends - $0.69 per share
Excess tax benefit from stock compensation
Stock-based compensation expense
Stock purchased at cost
Stock option exercise activity
Restricted shares (issued) surrendered
Shares surrendered for taxes
Ending Balance	(854.9)		(854.9)
Treasury Stock [Member]
Shareholding pattern
Net Income
Foreign currency translation adjustments
Pension and postretirement liability adjustment (net of the income tax benefit of $24.5 million)
Unrealized loss on marketable securities
Change in fair value of derivative financial instruments, net of reclassifications
Dividends - $0.69 per share
Excess tax benefit from stock compensation
Stock-based compensation expense
Stock purchased at cost			(112.3)
Stock option exercise activity			33.1
Restricted shares (issued) surrendered			3.9
Shares surrendered for taxes			(8.1)
Ending Balance	(112.6)		(112.6)
Noncontrolling Interest [Member]
Shareholding pattern
Net Income			0.3
Foreign currency translation adjustments
Pension and postretirement liability adjustment (net of the income tax benefit of $24.5 million)
Unrealized loss on marketable securities			(0.1)
Change in fair value of derivative financial instruments, net of reclassifications
Dividends - $0.69 per share
Excess tax benefit from stock compensation
Stock-based compensation expense
Stock purchased at cost
Stock option exercise activity
Restricted shares (issued) surrendered
Shares surrendered for taxes
Ending Balance	$ 14.4		$ 14.4