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ORGANIZATION AND BASIS OF PRESENTATION - Receivables from Customers (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Receivables from customers
Customer receivables	$ 1,192	$ 1,367
Less — Allowance for uncollectible customer receivables	159	164
Current accounts receivable	1,033	1,203
Billed Revenues
Receivables from customers
Customer receivables	616	800
Billed Revenues | Financial Asset, Greater than 30 Days Past Due
Receivables from customers
Customer receivables	318	349
Unbilled Revenues
Receivables from customers
Customer receivables	$ 576	$ 567

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- Definition

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

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