Income Taxes (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Summary of variation of effective income tax rate from continuing operations from the statutory federal income tax rate
Income from continuing operations before income taxes	$ 1,164.5	$ 804.9	$ 784.1
Statutory federal income tax rate	35.00%	35.00%	35.00%
State and local taxes	1.9	4.6	7.1
Effective Income Tax Rate Reconciliation, State and local taxes	0.20%	0.60%	0.90%
Tax benefits related to U.S. manufacturing	(16.1)	(6.6)	(7.4)
Effective Income Tax Rate Reconciliation, Tax benefits related to U.S. manufacturing	(1.40%)	(0.80%)	(0.90%)
Tax credits	(24.3)	(25.1)	(23.8)
Effective Income Tax Rate Reconciliation, Tax Credits	(2.10%)	(3.10%)	(3.00%)
Deemed repatriation of non-U.S. earnings	3.2	14.0	14.0
Effective Income Tax Rate Reconciliation, Deemed repatriation of non-U.S. earnings	0.30%	1.70%	1.80%
Differences in rates on foreign subsidiaries	(15.2)	(27.6)	(33.8)
Effective Income Tax Rate, Differences in rates on foreign subsidiaries	(1.30%)	(3.40%)	(4.30%)
Interest on potential tax liabilities	3.7	4.1	(7.7)
Effective Income Tax Rate, Interest on potential tax liabilities	0.30%	0.50%	(1.00%)
Tax settlements and other adjustments to tax reserves	(2.9)	(9.0)	7.5
Effective Income Tax Rate, Tax settlements and other adjustments to tax reserves	(0.30%)	(1.10%)	1.00%
Other items	$ (11.9)	$ (15.6)	$ (22.6)
Effective Income Tax Rate Reconciliation, Other items	(1.00%)	(2.00%)	(3.00%)
Effective Income Tax Rate	29.70%	27.40%	26.50%