Commitments and Contingencies (Tables)

9 Months Ended

Sep. 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		September 30, 2017
Maximum potential payments	$	177	$	1,349
Carrying value of recorded liabilities related to guarantees and limited indemnities	23		399

Warranty [Table Text Block]

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

	First Nine Months
	2016			2017
Beginning balance	$	4,558		$	4,960
Payments made during the period	(2,464		)	(2,596		)
Changes in accrual related to warranties issued during the period	1,704			1,588
Changes in accrual related to pre-existing warranties	1,088			968
Foreign currency translation and other	42			111
Ending balance	$	4,928		$	5,031