Segment Information (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Segment Reporting Information by Segment

Three Months Ended March 31,	2018			2017
Net sales and revenues:
Truck	$	4,536.1		$	3,297.3
Less intersegment		(183.1	)		(167.2	)
External customers		4,353.0			3,130.1
Parts		953.5			799.1
Less intersegment		(13.6	)		(12.4	)
External customers		939.9			786.7
Other		28.9			18.9
		5,321.8			3,935.7
Financial Services		332.2			302.2
	$	5,654.0		$	4,237.9
Income before income taxes:
Truck	$	395.2		$	231.2
Parts		191.8			150.8
Other		4.9			1.3
		591.9			383.3
Financial Services		67.5			56.8
Investment income		10.0			8.1
	$	669.4		$	448.2
Depreciation and amortization:
Truck	$	107.3		$	107.1
Parts		2.2			1.9
Other		4.5			3.8
		114.0			112.8
Financial Services		159.5			146.4
	$	273.5		$	259.2