Derivatives and Hedging Transactions (Details) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended														3 Months Ended			3 Months Ended																					3 Months Ended					3 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2006 contract	Dec. 31, 2014 Other current assets USD ($)	Dec. 31, 2014 Other current liabilities USD ($)	Mar. 31, 2015 Five year 2012 senior notes USD ($)	Mar. 31, 2015 Three year 2018 senior notes USD ($)	Jan. 31, 2015 Three year 2018 senior notes	Mar. 31, 2015 Series A private placement senior notes due 2018 USD ($)	Mar. 31, 2015 Five year 2011 senior notes USD ($)	Mar. 31, 2015 Foreign currency forward contracts USD ($)	Dec. 31, 2014 Foreign currency forward contracts USD ($)	Mar. 31, 2015 Interest rate swap USD ($)	Mar. 31, 2015 Interest rate swap EUR (€)	Dec. 31, 2014 Interest rate swap USD ($)	Dec. 31, 2014 Interest rate swap EUR (€)	Mar. 31, 2015 Cash Flow Hedges Derivatives designated as hedging instruments USD ($)	Mar. 31, 2014 Cash Flow Hedges Derivatives designated as hedging instruments USD ($)	Sep. 30, 2014 Cash Flow Hedges Foreign currency forward contracts EUR (€)	Mar. 31, 2015 Cash Flow Hedges Foreign currency forward contracts Derivatives designated as hedging instruments USD ($)	Mar. 31, 2014 Cash Flow Hedges Foreign currency forward contracts Derivatives designated as hedging instruments USD ($)	Mar. 31, 2015 Cash Flow Hedges Foreign currency forward contracts Derivatives designated as hedging instruments AOCI (equity) USD ($)	Mar. 31, 2014 Cash Flow Hedges Foreign currency forward contracts Derivatives designated as hedging instruments AOCI (equity) USD ($)	Mar. 31, 2015 Cash Flow Hedges Foreign currency forward contracts Derivatives designated as hedging instruments Cost of sales USD ($)	Mar. 31, 2014 Cash Flow Hedges Foreign currency forward contracts Derivatives designated as hedging instruments Cost of sales USD ($)	Mar. 31, 2015 Cash Flow Hedges Foreign currency forward contracts Derivatives designated as hedging instruments Selling, general and administrative expenses USD ($)	Mar. 31, 2014 Cash Flow Hedges Foreign currency forward contracts Derivatives designated as hedging instruments Selling, general and administrative expenses USD ($)	Mar. 31, 2015 Cash Flow Hedges Foreign currency forward contracts Derivatives not designated as hedging instruments USD ($)	Mar. 31, 2014 Cash Flow Hedges Foreign currency forward contracts Derivatives not designated as hedging instruments USD ($)	Mar. 31, 2015 Cash Flow Hedges Foreign currency forward contracts Derivatives not designated as hedging instruments Selling, general and administrative expenses USD ($)	Mar. 31, 2014 Cash Flow Hedges Foreign currency forward contracts Derivatives not designated as hedging instruments Selling, general and administrative expenses USD ($)	Mar. 31, 2015 Cash Flow Hedges Foreign currency forward contracts Derivatives not designated as hedging instruments Interest expense, net USD ($)	Mar. 31, 2014 Cash Flow Hedges Foreign currency forward contracts Derivatives not designated as hedging instruments Interest expense, net USD ($)	Mar. 31, 2015 Cash Flow Hedges Interest rate swap Derivatives designated as hedging instruments AOCI (equity) USD ($)	Mar. 31, 2015 Cash Flow Hedges Interest rate swap Derivatives designated as hedging instruments Interest expense, net USD ($)	Mar. 31, 2014 Cash Flow Hedges Interest rate swap Derivatives designated as hedging instruments Interest expense, net USD ($)	May 31, 2014 Fair Value Hedges Interest rate swap USD ($)	Jan. 31, 2015 Fair Value Hedges Interest rate swap Three year 2018 senior notes USD ($)	Jan. 31, 2015 Fair Value Hedges Interest rate swap Series A private placement senior notes due 2018 USD ($)	Jan. 31, 2015 Fair Value Hedges Interest rate swap Five year 2011 senior notes USD ($)	Mar. 31, 2015 Fair Value Hedges Interest rate swap Interest expense, net USD ($)	Mar. 31, 2015 Net Investment Hedges USD ($)	Mar. 31, 2014 Net Investment Hedges USD ($)	Mar. 31, 2015 Net Investment Hedges EUR (€)	Dec. 31, 2014 Net Investment Hedges EUR (€)	Mar. 31, 2015 Net Investment Hedges Senior euro notes USD ($)	Mar. 31, 2015 Net Investment Hedges Senior euro notes EUR (€)	Sep. 30, 2014 Net Investment Hedges Foreign currency forward contracts EUR (€)	Mar. 31, 2015 Net Investment Hedges Foreign currency forward contract 1 EUR (€)	Mar. 31, 2015 Net Investment Hedges Foreign currency forward contract 2 EUR (€)	Mar. 31, 2015 Net Investment Hedges Foreign currency forward contract 3 Derivatives designated as hedging instruments EUR (€)	Mar. 31, 2015 Net Investment Hedges Foreign currency forward contract 3 Derivatives not designated as hedging instruments EUR (€)
Derivatives and Hedging Transactions
Maximum period for hedged transactions	12 months
Number of interest rate swap contracts entered into and subsequently closed			2
Impact on AOCI and earnings from derivative contracts
Unrealized gain (loss) recognized into AOCI (effective portion)																	$ 10.9	$ 0.2				$ 25.3	$ 0.2											$ (14.4)
Gain (loss) recognized in income (effective portion)																	4.1	(0.6)		5.3	0.4			4.8	(0.2)	0.5	0.6								(1.2)	(1.0)
Aggregate principal amount						500	300		250	1,250																											500	300	250	1,250
Interest rate (as a percent)								1.55%																													1.45%	1.55%	3.69%	3.00%
Gain (loss) on derivative recognized in income																												(0.1)	0.7	4.8	3.1	(4.9)	(2.4)								1.0
Gain (loss) on hedged item recognized in income																																									(1.0)
Net Investment Hedge:
Euro-denominated debt outstanding																																														196	175
Notional values											2,700	2,800	1,425	400	725	400			495																									935	495			75	360	80	(360)	360
Revaluation gains (losses), net of tax	57.0	(3.7)																																								57.0	(3.7)
Derivative Summary
Cash collateral received	0
Cash collateral pledged	0
Reclassification adjustment				$ (18.1)	$ 18.1