Debt (Details Textuals) (USD $)	3 Months Ended				3 Months Ended		3 Months Ended		3 Months Ended							3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Letter of Credit [Member]	Mar. 31, 2014 Global Revolving Credit Facility [Member]	Mar. 31, 2014 U.S Commercial Paper, Long-Term [Member]	Dec. 31, 2013 U.S Commercial Paper, Long-Term [Member]	Mar. 31, 2014 Canadian Commerial Paper [Member]	Dec. 31, 2013 Canadian Commerial Paper [Member]	Mar. 31, 2014 Global Revolving Credit Facility Member	Mar. 31, 2014 Unsecured Us Notes Medium Term Notes Long Term [Member]	Mar. 31, 2014 Unsecured Us Obligations Principally Bank Term Loans Long Term [Member]	Mar. 31, 2014 Unsecured Foreign Obligations Long Term [Member]	Mar. 31, 2014 Capital Lease Obligations [Member]	Mar. 31, 2014 Unsecured Medium Term Notes Due 2019 [Member]	Feb. 25, 2014 Unsecured Medium Term Notes Due 2019 [Member]	Mar. 31, 2014 Short-term Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date Range, Start										Mar. 01, 2015	Mar. 08, 2015	Mar. 01, 2015	May 24, 2014			Jun. 18, 2014
Debt Instrument, Maturity Date Range, End					Oct. 18, 2018		Oct. 18, 2018		Oct. 18, 2018	Feb. 25, 2025	Mar. 19, 2018	Sep. 06, 2016	Dec. 28, 2019			Jun. 18, 2014
Unamortized original issue discounts	$ 8,400,000	$ 8,300,000
Notional amount of the executed interest rate swap designated as a fair value hedge	500,000,000	400,000,000
Line of Credit Facility [Abstract]
Maximum borrowing capacity under global revolving credit facility			75,000,000	900,000,000
Number of lending institutions	12
Letter of credit outstanding amount			0
Annual facility fees minimum	0.08
Annual facility fees maximum	0.275
Global revolving credit facility covenant terms, debt to consolidated tangible net worth ratio	less than or equal to 300%
Debt to consolidated tangible net worth ratio	188.00%
Line of Credit Facility, Remaining Borrowing Capacity	242,700,000
Debt (Textuals) [Abstract]
Commercial paper classified as long term debt	640,940,000	498,236,000			640,940,000	486,939,000	0	11,297,000
Face amount of unsecured medium-term notes issued															350,000,000
Repurchase price condition of notes														101% of principal plus accrued and unpaid interest
Total available proceeds under trade receivables purchase and sale program	175,000,000
Number of days under trade trade receivables purchase and sale program	364 days
Trade Receivables Purchase And Sale Program Amounts Outstanding	0	0
Global Revolving Credit Facility Unused Capacity Commitment Fee Percent	12.50%
Letters Of Credit And Surety Bonds Outstanding	$ 308,900,000	$ 310,500,000