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ORGANIZATION AND BASIS OF PRESENTATION - Receivables from Customers (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Receivables from customers
Customers	$ 1,203	$ 1,091
Billed
Receivables from customers
Customers	636	564
Unbilled
Receivables from customers
Customers	$ 567	$ 527

X

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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- References

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