Goodwill and Other Intangibles (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill [Text Block]

	2016						2015
(millions of dollars)	Engine			Drivetrain			Engine			Drivetrain
Gross goodwill balance, January 1	$	1,338.2		$	921.5		$	1,362.0		$	345.7
Accumulated impairment losses, January 1	(501.8		)	(0.2		)	(501.8		)	(0.2		)
Net goodwill balance, January 1	$	836.4		$	921.3		$	860.2		$	345.5
Goodwill during the year:
Acquisitions*	—			(12.1		)	11.6			584.7
Divestitures**	—			(24.2		)	—			—
Translation adjustment and other	(14.2		)	(5.0		)	(35.4		)	(8.9		)
Ending balance, December 31	$	822.2		$	880.0		$	836.4		$	921.3

Intangible assets disclosure [Text Block]

	December 31, 2016						December 31, 2015
(millions of dollars)	Gross carrying amount		Accumulated amortization		Net carrying amount		Gross carrying amount		Accumulated amortization		Net carrying amount
Amortized intangible assets:
Patented and unpatented technology	$	108.1	$	41.5	$	66.6	$	128.7	$	42.4	$	86.3
Customer relationships	481.4		141.2		340.2		490.3		116.1		374.2
Miscellaneous	5.3		3.4		1.9		5.6		3.0		2.6
Total amortized intangible assets	594.8		186.1		408.7		624.6		161.5		463.1
In-process R&D	3.8		—		3.8		14.6		—		14.6
Unamortized trade names	51.0		—		51.0		66.1		—		66.1
Total other intangible assets	$	649.6	$	186.1	$	463.5	$	705.3	$	161.5	$	543.8

Intangible assets gross roll forward [Text Block]

(millions of dollars)	2016			2015
Beginning balance, January 1	$	705.3		$	307.8
Acquisitions*	—			423.8
Impairment**	(23.9		)	—
Divestitures***	(19.9		)	—
Translation adjustment	(11.9		)	(26.3		)
Ending balance, December 31	$	649.6		$	705.3

Accumulated amortization net [Text Block]

(millions of dollars)	2016			2015
Beginning balance, January 1	$	161.5		$	156.7
Amortization	40.4			19.2
Impairment	(8.2		)	—
Divestitures	(0.3		)	—
Translation adjustment	(7.3		)	(14.4		)
Ending balance, December 31	$	186.1		$	161.5