Financing Receivables, Receivables Purchased/Participated from IBM - Collectively Evaluated Financing Receivables (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Dec. 31, 2019
FINANCING RECEIVABLES, RECEIVABLES PURCHASED
Forecast duration	2 years
ASU 2016-13 \| Adjustment
FINANCING RECEIVABLES, RECEIVABLES PURCHASED
Receivables - allowances, including off-balance sheet commitments		$ 56

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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