Revenue - Receivables from Customers (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customers	$ 1,318	$ 1,192
Less — Allowance for uncollectible customer receivables	136	159
Accounts Receivable, after Allowance for Credit Loss, Current	1,182	1,033
Billed Revenues
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customers	800	616
Unbilled Revenues
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customers	$ 518	$ 576

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.

No definition available.

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+ References

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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.

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