Consolidated Statements of Comprehensive Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Investment income	$ 6.5	$ 8.9
Net sales and revenues	3,924.3	4,776.1
Income Before Income Taxes	337.2	479.0
Income taxes	101.1	151.7
Net Income	236.1	327.3
Net Income Per Share:
Basic	$ 0.67	$ 0.92
Diluted	$ 0.67	$ 0.91
Weighted Average Common Shares Outstanding:
Basic	354.0	357.0
Diluted	354.8	357.8
Dividends declared per share	$ 0.20	$ 0.18
Comprehensive Income	156.6	422.4
Truck, Parts and Other
Net sales and revenues	3,631.2	4,514.7
Cost of sales and revenues	3,189.3	3,919.9
Research and development	72.1	72.3
Selling, general and administrative	117.7	125.8
Interest and other expense (income), net	1.5	(2.1)
Costs and Expenses, Total	3,380.6	4,115.9
Income Before Income Taxes	250.6	398.8
Financial Services
Interest and fees	113.8	109.9
Operating lease, rental and other income	179.3	151.5
Revenues	293.1	261.4
Interest and other borrowing expenses	38.9	39.7
Depreciation and other expense	144.1	118.8
Selling, general and administrative	23.5	24.1
Provision for losses on receivables	6.5	7.5
Costs and Expenses, Total	213.0	190.1
Income Before Income Taxes	$ 80.1	$ 71.3