Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Assets and liabilities measured at fair value [Text Block]

			Basis of fair value measurements
	Balance at December 31, 2015		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	$	2.7	$	—	$	2.7	$	—	A
Other long-term receivables (insurance settlement agreement note receivable)	$	81.2	$	—	$	81.2	$	—	C
Liabilities:
Foreign currency contracts	$	8.7	$	—	$	8.7	$	—	A
Commodity contracts	$	10.4	$	—	$	10.4	$	—	A
Interest rate swap contracts	$	2.7	$	—	$	2.7	$	—	A

			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
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

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

			Basis of fair value measurements
(millions of dollars)	Balance at December 31, 2015		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	$	117.4	$	14.3	$	103.1	$	—	A
Equity securities	94.2		36.9		57.3		—		A
Real estate and other	24.2		—		24.2		—		A
	$	235.8	$	51.2	$	184.6	$	—
Non-U.S. Plans:
Fixed income securities	$	181.0	$	—	$	181.0	$	—	A
Equity securities	194.7		82.9		111.8		—		A
Real estate and other	19.4		—		19.4		—		A
	$	395.1	$	82.9	$	312.2	$	—

			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	$	—