Financing Arrangements (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2014
Line of Credit Facility [Line Items]
Short-term Debt	$ 200,000	$ 62,000,000
Long-term Fixed-rate Debt, Carrying Value	519,600,000	520,400,000
Financing Arrangements (Textual) [Abstract]
Line of Credit Facility, Fair Value of Amount Outstanding	688,500,000	594,500,000
Accounts Receivable, less allowances (2015 - $17.2 million; 2014 - $13.7 million	465,000,000	454,600,000
Series A Medium Term Note [Member]
Financing Arrangements (Textual) [Abstract]
Line of Credit Facility, Fair Value of Amount Outstanding	$ 174,400,000	174,400,000
Fixed-rate Medium-Term Notes, Series A, Interest rate, Minimum	6.74%
Fixed-rate Medium-Term Notes, Series A, Interest rate, Maximum	7.76%
Senior Unsecured Notes - 3.875% [Member]
Financing Arrangements (Textual) [Abstract]
Line of Credit Facility, Fair Value of Amount Outstanding	$ 345,100,000	344,800,000
Debt Instrument, Interest rate	3.875%
Senior Unsecured Notes - Variable Rate [Member]
Financing Arrangements (Textual) [Abstract]
Maximum borrowing capacity under line of credit	$ 500,000,000
Remaining Borrowing Capacity under Line of Credit Facility of Company's foreign subsidiaries	$ 379,100,000
Line of credit expiration date	Jun. 19, 2020
Line of Credit Facility, Fair Value of Amount Outstanding	$ 120,900,000	$ 75,200,000
Debt Instrument, Interest rate	1.66%	1.45%
Foreign Subsidiary [Member]
Financing Arrangements (Textual) [Abstract]
Borrowings guarantees	$ 1,100,000
Line of Credit Accounts Receivable Securitization [Member]
Line of Credit Facility [Line Items]
Short-term Debt	71,000,000
Financing Arrangements (Textual) [Abstract]
Maximum borrowing capacity under line of credit	100,000,000
Remaining Borrowing Capacity under Line of Credit Facility of Company's foreign subsidiaries	$ 23,000,000
Line of credit expiration date	Nov. 30, 2018
Line of Credit Facility, Fair Value of Amount Outstanding	$ 48,000,000
Line of Credit [Member] | Foreign Subsidiary [Member]
Line of Credit Facility [Line Items]
Short-term Debt	200,000	$ 13,000,000
Financing Arrangements (Textual) [Abstract]
Maximum borrowing capacity under line of credit	225,000,000
Remaining Borrowing Capacity under Line of Credit Facility of Company's foreign subsidiaries	$ 223,700,000
Line of Credit Accounts Receivable Securitization [Member]
Financing Arrangements (Textual) [Abstract]
Line of credit stated variable interest rate, Low Range		1.05%	1.28%
Variable Rate Lines of Credit [Member]
Financing Arrangements (Textual) [Abstract]
Line of credit stated variable interest rate, Low Range	0.44%	0.31%
Line of Credit stated variable interest rate, High Range	10.50%	0.44%