Commitments and Contingent Liabilities Guarantees (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Guarantor Obligations [Line Items]
Guarantee Obligations		$ 259	$ 297
Customer Guarantee, Bank Borrowings [Member]
Guarantor Obligations [Line Items]
Guarantee Obligations	[1]	$ 90
Guaranteed Obligations, Maximum Term, Years		4 years
Equity Affiliates Guarantee, Bank Borrowings [Member]
Guarantor Obligations [Line Items]
Guarantee Obligations	[2]	$ 165
Guaranteed Obligations, Maximum Term, Months		12 months
Residual Value Guarantee [Member]
Guarantor Obligations [Line Items]
Guarantee Obligations	[3]	$ 4
Guaranteed Obligations, Maximum Term, Years		7 years
Current Portion | Customer Guarantee, Bank Borrowings [Member]
Guarantor Obligations [Line Items]
Guarantee Obligations		$ 89

[1] Existing guarantees for select customers, as part of contractual agreements. The terms of the guarantees are equivalent to the terms of the customer loans that are primarily made to finance customer invoices. Of the total maximum future payments, $89 million had terms less than a year.

[2] Existing guarantees for non-consolidated affiliates' liquidity needs in normal operations.

[3] The company provides guarantees related to leased assets specifying the residual value that will be available to the lessor at lease termination through sale of the assets to the lessee or third parties.