Consolidated Statements of Income € in Millions, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares
Provision for losses on receivables	$ 22.3	$ 18.4	$ 12.4
Investment income	35.3	27.6	21.8
Income before income taxes	2,173.3	1,130.4	2,337.1
Income taxes	498.1	608.7	733.1
Net Income	$ 1,675.2	$ 521.7	$ 1,604.0
Net Income Per Share
Basic | $ / shares	$ 4.76	$ 1.49	$ 4.52
Diluted | $ / shares	$ 4.75	$ 1.48	$ 4.51
Weighted Average Number of Common Shares Outstanding
Basic | shares	351.9	351.1	354.6
Diluted | shares	352.9	351.8	355.6
Truck, Parts and Other
Net sales and revenues	$ 18,187.5	$ 15,846.6	$ 17,942.8
Cost of sales and revenues	15,593.7	13,517.7	15,292.1
Research and development	264.7	247.2	239.8
Selling, general and administrative	449.5	440.8	445.9
European Commission charge	0.0	833.0	0.0
Interest and other expense, net	5.6	11.6	12.3
Costs and Expenses, Total	16,313.5	15,050.3	15,990.1
Income before income taxes	1,874.0	796.3	1,952.7
Financial Services
Interest and fees	431.1	426.2	443.8
Operating lease, rental and other revenues	837.8	760.5	728.5
Revenues	1,268.9	1,186.7	1,172.3
Interest and other borrowing expenses	149.6	127.2	118.0
Depreciation and other expenses	727.5	635.2	583.7
Selling, general and administrative	105.5	99.4	95.6
Provision for losses on receivables	22.3	18.4	12.4
Costs and Expenses, Total	1,004.9	880.2	809.7
Income before income taxes	$ 264.0	$ 306.5	$ 362.6