Segment Information (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Segment Reporting Information by Segment

	Three Months Ended						Nine Months Ended
	September 30						September 30
		2018			2017			2018			2017
Net sales and revenues:
Truck	$	4,677.8		$	4,065.6		$	13,892.5		$	11,131.8
Less intersegment		(248.4	)		(198.2	)		(642.3	)		(580.7	)
External customers		4,429.4			3,867.4			13,250.2			10,551.1
Parts		974.8			854.4			2,911.4			2,488.7
Less intersegment		(14.7	)		(14.4	)		(43.4	)		(38.9	)
External customers		960.1			840.0			2,868.0			2,449.8
Other		27.4			24.1			87.7			64.2
		5,416.9			4,731.5			16,205.9			13,065.1
Financial Services		339.9			328.2			1,010.1			936.7
	$	5,756.8		$	5,059.7		$	17,216.0		$	14,001.8
Income before income taxes:
Truck	$	391.0		$	346.7		$	1,220.2		$	890.6
Parts		188.5			151.8			574.8			453.8
Other		(5.9	)		3.7			3.1			9.0
		573.6			502.2			1,798.1			1,353.4
Financial Services		78.8			70.6			218.7			189.8
Investment income		16.4			9.0			41.0			25.8
	$	668.8		$	581.8		$	2,057.8		$	1,569.0
Depreciation and amortization:
Truck	$	93.6		$	122.4		$	306.9		$	340.5
Parts		2.3			2.4			6.7			6.3
Other		4.5			5.7			13.4			13.7
		100.4			130.5			327.0			360.5
Financial Services		152.2			155.6			467.4			453.8
	$	252.6		$	286.1		$	794.4		$	814.3