Financing Arrangements (Details Textual) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Line of Credit Facility [Line Items]
Short-term Debt	$ 49.5	$ 19.2
Long-term Fixed-rate Debt, Carrying Value		507.3	$ 507.6
Financing Arrangements (Textual) [Abstract]
Line of Credit Facility, Fair Value of Amount Outstanding	952.1	640.0
Accounts Receivable, less allowances (2015 - $17.2 million; 2014 - $13.7 million	501.7	438.0
Series A Medium Term Note [Member]
Financing Arrangements (Textual) [Abstract]
Line of Credit Facility, Fair Value of Amount Outstanding	$ 159.5	159.5
Debt Instrument, Maturity Date	May 01, 2028
Senior Unsecured Notes - 3.875% [Member]
Financing Arrangements (Textual) [Abstract]
Line of Credit Facility, Fair Value of Amount Outstanding	$ 346.4	345.9
Debt Instrument, Interest rate	3.875%
Debt Instrument, Maturity Date	Sep. 01, 2024
Senior Unsecured Notes - Variable Rate [Member]
Financing Arrangements (Textual) [Abstract]
Maximum borrowing capacity under line of credit	$ 500.0
Remaining Borrowing Capacity under Line of Credit Facility of Company's foreign subsidiaries	$ 116.0
Line of credit expiration date	Jun. 19, 2020
Line of Credit Facility, Fair Value of Amount Outstanding	$ 384.0	$ 83.8
Debt Instrument, Interest rate	1.67%	1.50%
Debt Instrument, Maturity Date	Jun. 19, 2020
Foreign Subsidiary [Member]
Financing Arrangements (Textual) [Abstract]
Borrowings guarantees	$ 1.9
Line of Credit Accounts Receivable Securitization [Member]
Line of Credit Facility [Line Items]
Short-term Debt	87.2
Financing Arrangements (Textual) [Abstract]
Maximum borrowing capacity under line of credit	100.0
Remaining Borrowing Capacity under Line of Credit Facility of Company's foreign subsidiaries	$ 4.3
Line of credit expiration date	Nov. 30, 2018
Line of Credit Facility, Fair Value of Amount Outstanding	$ 82.9
Line of Credit [Member] | Foreign Subsidiary [Member]
Line of Credit Facility [Line Items]
Short-term Debt	27.1	$ 19.2
Financing Arrangements (Textual) [Abstract]
Maximum borrowing capacity under line of credit	243.4
Remaining Borrowing Capacity under Line of Credit Facility of Company's foreign subsidiaries	$ 214.4
Line of Credit Accounts Receivable Securitization [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate at Period End	1.88%
Financing Arrangements (Textual) [Abstract]
Line of credit stated variable interest rate, Low Range	1.88%	1.65%
Variable Rate Lines of Credit [Member]
Financing Arrangements (Textual) [Abstract]
Line of credit stated variable interest rate, Low Range	0.50%	0.50%
Line of Credit stated variable interest rate, High Range	4.79%	0.50%