Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Assets and liabilities measured at fair value [Text Block]

			Basis of fair value measurements
	Balance at December 31, 2014		Quoted prices in active markets for identical items (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)		Valuation technique
(millions of dollars)
Assets:
Foreign currency contracts	$	3.8	$	—	$	3.8	$	—	A
Other long-term receivables (insurance settlement agreement note receivable)	$	90.4	$	—	$	90.4	$	—	C
Liabilities:
Foreign currency contracts	$	2.9	$	—	$	2.9	$	—	A

			Basis of fair value measurements
(millions of dollars)	Balance at December 31, 2013		Quoted prices in active markets for identical items (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)		Valuation technique
Assets:
Foreign currency contracts	$	3.4	$	—	$	3.4	$	—	A
Other long-term receivables (insurance settlement agreement note receivable)	$	35.6	$	—	$	35.6	$	—	C
Liabilities:
Foreign currency contracts	$	7.4	$	—	$	7.4	$	—	A
Net investment hedge contracts	$	24.3	$	—	$	24.3	$	—	A

Fair value defined benefit plan assets measured at recurring and non-recurring basis [Text Block]

The following tables classify the Company's defined benefit plan assets measured at fair value on a recurring basis as of December 31, 2014 and 2013:

			Basis of fair value measurements
(millions of dollars)	Balance at December 31, 2014		Quoted prices in active markets for identical items (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)		Valuation technique
U.S. Plans:
Fixed income securities	$	145.7	$	—	$	145.7	$	—	A
Equity securities	92.0		44.2		47.8		—		A
Real estate and other	27.9		—		27.9		—		A
	$	265.6	$	44.2	$	221.4	$	—
Non-U.S. Plans:
Fixed income securities	$	188.2	$	—	$	188.2	$	—	A
Equity securities	194.8		89.9		104.9		—		A
Real estate and other	12.6		—		12.6		—		A
	$	395.6	$	89.9	$	305.7	$	—

			Basis of fair value measurements
(millions of dollars)	Balance at December 31, 2013		Quoted prices in active markets for identical items (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)		Valuation technique
U.S. Plans:
Fixed income securities	$	147.2	$	—	$	147.2	$	—	A
Equity securities	100.9		50.5		50.4		—		A
Real estate and other	26.0		—		26.0		—		A
	$	274.1	$	50.5	$	223.6	$	—
Non-U.S. Plans:
Fixed income securities	$	143.7	$	—	$	143.7	$	—	A
Equity securities	188.2		70.5		117.7		—		A
Real estate and other	13.1		—		13.1		—		A
	$	345.0	$	70.5	$	274.5	$	—