Accounts and Notes Receivable and Credit Quality of Receivables - Allowance for Notes Receivable Activity (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Allowance for notes receivable
Financing Receivable, Allowance for Credit Loss	$ (42)	$ (40)
Provision for Loan, Lease, and Other Losses	(28)	(1)
Financing Receivable, Allowance for Credit Loss, Recovery	0	3
Financing Receivable, Allowance for Credit Loss	(70)	$ (38)
Allowance for Loan and Lease Losses, Period Increase (Decrease)	28
Notes receivable
Allowance for notes receivable
Financing Receivable, Allowance for Credit Loss	(36)
Financing Receivable, Allowance for Credit Loss	$ (70)

Amount of increase (decrease) of allowance reserve for credit loss.

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- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

+ References

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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

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