Special Charges - Restructuring reserve activity and total expected cash outlay (Details) $ in Millions	9 Months Ended
	Sep. 30, 2017 USD ($)
Special Charges
Remaining expected cash payments for restructuring activities	$ 30
Restructuring reserve activity
Balance at beginning of period	63
Reversals	(9)
Cash paid	(75)
Balance at end of period	32
Severance Costs
Restructuring reserve activity
Balance at beginning of period	50
Reversals	(1)
Cash paid	(64)
Balance at end of period	19
Contract Terminations and Other
Restructuring reserve activity
Balance at beginning of period	13
Reversals	(8)
Cash paid	(11)
Balance at end of period	13
Arctic Cat Acquisition and Restructuring Costs
Restructuring reserve activity
Provision	27
Arctic Cat Acquisition and Restructuring Costs | Severance Costs
Restructuring reserve activity
Provision	19
Arctic Cat Acquisition and Restructuring Costs | Contract Terminations and Other
Restructuring reserve activity
Provision	8
2016 Restructuring Plan
Restructuring reserve activity
Provision	26
2016 Restructuring Plan | Severance Costs
Restructuring reserve activity
Provision	15
2016 Restructuring Plan | Contract Terminations and Other
Restructuring reserve activity
Provision	$ 11