Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2014

Derivative [Line Items]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Text Block]

	Assets					Liabilities
(millions of dollars)	Location	December 31, 2014		December 31, 2013		Location	December 31, 2014		December 31, 2013
Foreign currency	Prepayments and other current assets	$	3.7	$	3.4	Accounts payable and accrued expenses	$	2.4	$	7.4
	Other non-current assets	$	0.1	$	—	Other non-current liabilities	$	0.5	$	—
Net investment hedges	Other non-current assets	$	—	$	—	Other non-current liabilities	$	—	$	24.3

Deferred Losses Reported In Other Comprehensive Income Loss [Text Block]

	Deferred gain (loss) in AOCI at					Gain (loss) expected to be reclassified to income in one year or less
(millions of dollars)	December 31, 2014		December 31, 2013
Foreign currency	$	1.3	$	(3.7	)	$	1.7
Net investment hedges	0.2		(22.1		)	—
Total	$	1.5	$	(25.8	)	$	1.7

Derivatives Designated As Cash Flow Hedging Instruments [Text Block]

		Gain (loss) reclassified from AOCI to income (effective portion)							Gain (loss) recognized in income (ineffective portion)
		Year Ended December 31,							Year Ended December 31,
(millions of dollars)	Location	2014			2013			Location	2014			2013
Foreign currency	Sales	$	1.2		$	1.7		SG&A expense	$	0.2		$	0.2
Foreign currency	Cost of goods sold	$	(1.0	)	$	(13.9	)	SG&A expense	$	—		$	(1.5	)
Foreign currency	SG&A expense	$	(0.8	)	$	(0.4	)	SG&A expense	$	—		$	—
Cross-currency swap	N/A							Interest expense	$	(0.7	)	$	1.3

Net investment hedge contracts [Member]

Derivative [Line Items]

Foreign Exchange Derivative Contracts Outstanding [Text Block]

(millions of dollars)	Cross-currency swaps
As of December 31, 2013	Notional in USD		Notional in local currency		Duration
Floating $ to Floating €	$	75.0	€	58.5	Oct - 19
Floating $ to Floating ¥	$	150.0	¥	17,581.5	Nov - 16

Foreign currency contracts [Member]

Derivative [Line Items]

Foreign Exchange Derivative Contracts Outstanding [Text Block]

Foreign currency derivatives (in millions)
Functional currency	Traded currency	Notional in traded currency December 31, 2014	Notional in traded currency December 31, 2013	Duration
Brazilian real	US dollar	—	19.3	Dec - 14
Chinese yuan	Japanese yen	—	215.0	Feb - 14
Chinese yuan	US dollar	24.9	12.3	Dec - 16
Euro	British pound	5.7	3.0	Dec - 15
Euro	Hungarian forint	—	6,430.5	Dec - 14
Euro	Japanese yen	4,371.8	5,830.7	Feb - 16
Euro	Korean won	—	663.1	Jul - 14
Euro	Polish zloty	—	96.0	Dec - 14
Euro	US dollar	23.5	29.4	Apr - 16
Hungarian forint	Euro	—	6.6	Dec - 14
Japanese yen	Chinese yuan	88.6	84.0	Dec - 15
Japanese yen	Korean won	6,712.5	5,715.5	Dec - 15
Japanese yen	US dollar	3.8	4.2	Dec - 15
Korean won	Euro	2.5	23.6	Dec - 15
Korean won	Japanese yen	72.0	380.5	Dec - 15
Korean won	US dollar	22.7	—	Dec - 15
Mexican peso	US dollar	22.6	—	Dec - 15
Swedish krona	Euro	31.4	33.7	Dec - 15
US dollar	Japanese yen	—	3,209.3	Dec - 14