Notes Payable and Long-Term Debt (Details) (USD $)										6 Months Ended		6 Months Ended		6 Months Ended		6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Mar. 31, 2012 Senior Notes One [Member]	Jun. 30, 2013 Short Term Borrowings [Member]	Dec. 31, 2012 Short Term Borrowings [Member]	Jun. 30, 2013 Receivables Securitization [Member]	Dec. 31, 2012 Receivables Securitization [Member]	Jun. 30, 2013 Total Short Term Debt [Member]	Dec. 31, 2012 Total Short Term Debt [Member]	Jun. 30, 2013 5.75% Senior Notes [Member]	Dec. 31, 2012 5.75% Senior Notes [Member]	Jun. 30, 2013 8.00% Senior Notes [Member]	Dec. 31, 2012 8.00% Senior Notes [Member]	Jun. 30, 2013 4.625% Senior Notes [Member]	Dec. 31, 2012 4.625% Senior Notes [Member]	Jun. 30, 2013 7.125% Senior Notes [Member]	Dec. 31, 2012 7.125% Senior Notes [Member]	Jun. 30, 2013 Revolving Credit Facility [Member]	Apr. 12, 2013 Revolving Credit Facility [Member]	Dec. 31, 2012 Revolving Credit Facility [Member]	Jun. 30, 2013 Term Loan Facilities And Other [Member]	Dec. 31, 2012 Term Loan Facilities And Other [Member]	Jun. 30, 2013 Unamortized portion of debt derivative [Member]	Dec. 31, 2012 Unamortized portion of debt derivative [Member]
Short-term debt
Short-term borrowings				$ 206,700,000	$ 129,100,000	$ 110,000,000	$ 110,000,000	$ 316,700,000	$ 239,100,000
Long-term debt
Long-term debt	913,400,000	828,100,000								149,600,000	149,600,000	133,900,000	133,900,000	248,100,000	247,900,000	119,400,000	119,400,000	220,000,000		140,000,000	24,200,000	17,100,000	18,200,000	20,200,000
Current portion of long-term debt	100,000	4,300,000
Long-term debt, net of current portion	913,300,000	823,800,000
Debt instrument par value										150,000,000		134,000,000		250,000,000		121,000,000
Debt instrument stated interest rate			3.50%							5.75%		8.00%		4.625%		7.125%
Debt instrument maturity date										Nov. 01, 2016		Oct. 01, 2019		Sep. 15, 2020		Feb. 15, 2029
Debt weighted average interest rate	3.60%	4.00%
Multi-currency revolving credit facility, current borrowing capacity																		750,000,000	650,000,000
Multi-currency revolving credit facility, maximum borrowing capacity																		1,000,000,000
Estimated fair value of senior unsecured notes	736,500,000	770,300,000
Fair value higher than carrying value for senior unsecured notes	85,500,000	119,500,000
Outstanding letter of credit	$ 23,900,000	$ 59,100,000