Pensions (Details 6) (USD $) In Millions, unless otherwise specified			12 Months Ended
	Dec. 31, 2013 U.S. and European Plans	Dec. 31, 2012 U.S. and European Plans	Dec. 31, 2013 U.S. Plans Minimum item	Dec. 31, 2013 U.S. Plans Maximum item	Dec. 31, 2013 U.S. Plans Equity Securities	Dec. 31, 2013 U.S. Plans Fixed Income Securities	Dec. 31, 2013 U.S. Plans Other Investments	Dec. 31, 2013 European Plans Equity Securities	Dec. 31, 2013 European Plans Fixed Income Securities	Dec. 31, 2013 European Plans Other Investments
Pensions
Number of highest rating			1	2
Total combined investment allocation (as a percent)					52.00%	43.00%	5.00%	34.00%	52.00%	14.00%
Non-current pension liabilities included in accrued pension and other liabilities	$ 17.7	$ 43.0