Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

The following table summarizes the changes in total product warranty and legacy product warranty liability reserves for the periods presented:

	Product Warranty						Legacy Product Warranty					Total
Millions of dollars	2018			2017			2018		2017			2018			2017
Balance at January 1	$	277		$	251		$	—	$	69		$	277		$	320
Issuances/accruals during the period	289			331			—		1			289			332
Settlements made during the period/other	(294		)	(305		)	—		(70		)	(294		)	(375		)
Reclassification of product warranty to held for sale	(4		)	—			—		—			(4		)	—
Balance at December 31	$	268		$	277		$	—	$	—		$	268		$	277
Current portion	$	194		$	203		$	—	$	—		$	194		$	203
Non-current portion	74			74			—					74			74
Total	$	268		$	277		$	—	$	—		$	268		$	277

Operating Lease Commitments

At December 31, 2018, we had noncancelable operating lease commitments totaling $1,050 million. The annual future minimum lease payments are summarized by year in the table below:

Millions of dollars
2019	$	238
2020	183
2021	144
2022	114
2023	103
Thereafter	268
Total noncancelable operating lease commitments	$	1,050

Purchase Obligations

Our expected cash outflows resulting from non-cancellable purchase obligations are summarized by year in the table below:

Millions of dollars
2019	$	210
2020	151
2021	102
2022	89
2023	61
Thereafter	35
Total purchase obligations	$	648