Segment Information (Tables)

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Segment Reporting Information by Segment

	Three Months Ended						Six Months Ended
	June 30						June 30
		2018			2017			2018			2017
Net sales and revenues:
Truck	$	4,678.6		$	3,768.9		$	9,214.7		$	7,066.2
Less intersegment		(210.8	)		(215.3	)		(393.9	)		(382.5	)
External customers		4,467.8			3,553.6			8,820.8			6,683.7
Parts		983.1			835.2			1,936.6			1,634.3
Less intersegment		(15.1	)		(12.1	)		(28.7	)		(24.5	)
External customers		968.0			823.1			1,907.9			1,609.8
Other		31.4			21.2			60.3			40.1
		5,467.2			4,397.9			10,789.0			8,333.6
Financial Services		338.0			306.3			670.2			608.5
	$	5,805.2		$	4,704.2		$	11,459.2		$	8,942.1
Income before income taxes:
Truck	$	434.0		$	312.7		$	829.2		$	543.9
Parts		194.5			151.2			386.3			302.0
Other		4.1			4.0			9.0			5.3
		632.6			467.9			1,224.5			851.2
Financial Services		72.4			62.4			139.9			119.2
Investment income		14.6			8.7			24.6			16.8
	$	719.6		$	539.0		$	1,389.0		$	987.2
Depreciation and amortization:
Truck	$	106.0		$	111.0		$	213.3		$	218.1
Parts		2.2			2.0			4.4			3.9
Other		4.4			4.2			8.9			8.0
		112.6			117.2			226.6			230.0
Financial Services		155.7			151.8			315.2			298.2
	$	268.3		$	269.0		$	541.8		$	528.2