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Allowance for Losses on Financial Assets Allowance for Losses on Financial Assets (Tables)
3 Months Ended
Mar. 31, 2020
Allowance for Losses on Financial Assets [Abstract]  
Financial Assets, Allowance for Credit Loss The change in allowances for expected credit losses for the three months ended March 31, 2020 consisted of the following:
 
Accounts receivable, net

Unbilled receivables, net

Other Current Assets, net

Customer financing, net

Other Assets, net

Total
Balance at January 1, 2020

($138
)

($81
)

($38
)

($5
)

($75
)

($337
)
Changes in estimates
(29
)
1

(10
)




(38
)
Write-offs
1









1

Balance at March 31, 2020

($166
)

($80
)

($48
)

($5
)

($75
)

($374
)