Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Guarantee obligations [Table Text Block]

The maximum potential payments and the carrying value of recorded liabilities related to guarantees and limited indemnities were as follows (in millions):

	December 31, 2016		June 30, 2017
Maximum potential payments	$	177	$	1,613
Carrying value of recorded liabilities related to guarantees and limited indemnities	23		481

Warranty [Table Text Block]

The estimate of our future warranty and field service action costs, net of supplier recoveries, for the periods ended June 30 were as follows (in millions):

	First Half
	2016			2017
Beginning balance	$	4,558		$	4,960
Payments made during the period	(1,593		)	(1,710		)
Changes in accrual related to warranties issued during the period	1,179			1,272
Changes in accrual related to pre-existing warranties	279			582
Foreign currency translation and other	45			71
Ending balance	$	4,468		$	5,175