Revenue Recognition - Contract with Customer, Asset and Liability (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer receivables, less allowance	$ 1,220	$ 1,193
Contract assets	19	19
Contract liabilities	662	733
Allowance	42	$ 50
Held for sale \| Mass Markets Fiber-to-the Home Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer receivables, less allowance	13
Contract liabilities	$ 30

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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