Financing Receivables (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment [Line Items]
Financing receivable	$ 192	$ 109
Financing Receivable, before Allowance for Credit Loss	203
Financing Receivable, Allowance for Credit Loss	11
Argentina [Member]
Financing Receivable Recorded Investment [Line Items]
Financing receivable	41	64
Financing Receivable, before Allowance for Credit Loss	52
Financing Receivable, Allowance for Credit Loss	11
Chile [Member]
Financing Receivable Recorded Investment [Line Items]
Financing receivable	106	33
Financing Receivable, before Allowance for Credit Loss	106
Financing Receivable, Allowance for Credit Loss	0
Other Entity [Member]
Financing Receivable Recorded Investment [Line Items]
Financing receivable	27	12
Financing Receivable, before Allowance for Credit Loss	27
Financing Receivable, Allowance for Credit Loss	0
UNITED STATES
Financing Receivable Recorded Investment [Line Items]
Financing receivable	18	$ 0
Financing Receivable, before Allowance for Credit Loss	18
Financing Receivable, Allowance for Credit Loss	$ 0