Segment Information (Tables)

6 Months Ended

Jun. 30, 2015

Segment Reporting [Abstract]

Segment Reporting Information by Segment

	Three Months Ended June 30						Six Months Ended June 30
	2015			2014			2015			2014
Net sales and revenues:
Truck	$	4,228.4		$	3,679.4		$	8,209.2		$	7,168.0
Less intersegment		(245.0	)		(224.4	)		(456.7	)		(383.8	)
External customers		3,983.4			3,455.0			7,752.5			6,784.2
Parts		788.4			790.1			1,552.8			1,527.3
Less intersegment		(11.9	)		(12.1	)		(23.6	)		(22.7	)
External customers		776.5			778.0			1,529.2			1,504.6
Other		26.2			34.0			52.4			64.4
		4,786.1			4,267.0			9,334.1			8,353.2
Financial Services		293.8			302.6			578.5			596.3
	$	5,079.9		$	4,569.6		$	9,912.6		$	8,949.5
Income (loss) before income taxes:
Truck	$	420.1		$	259.6		$	759.2		$	471.9
Parts		145.7			126.7			284.6			238.8
Other		(9.7	)		(2.5	)		(20.1	)		(11.7	)
		556.1			383.8			1,023.7			699.0
Financial Services		90.8			91.7			179.8			177.2
Investment income		5.3			5.5			10.4			11.3
	$	652.2		$	481.0		$	1,213.9		$	887.5
Depreciation and amortization:
Truck	$	101.9		$	100.5		$	198.9		$	200.2
Parts		1.6			1.3			3.1			2.7
Other		3.5			2.7			7.1			5.3
		107.0			104.5			209.1			208.2
Financial Services		120.3			123.2			239.3			239.3
	$	227.3		$	227.7		$	448.4		$	447.5