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Planned Divestiture of the Mass Markets Fiber-to-the-Home Business - Principal Components of Held for Sale Assets and Liabilities of Disposal Group (Details) - Held for sale - Mass Markets Fiber-to-the Home Business $ in Millions	Sep. 30, 2025 USD ($)
Assets held for sale
Accounts receivable, less allowance of $1	$ 13
Other current assets, net	16
Property, plant and equipment, net of accumulated depreciation of $742	2,370
Goodwill	1,336
Other assets, net	30
Total assets held for sale	3,765
Liabilities held for sale
Other current liabilities	3
Current portion of deferred revenue	32
Other non-current liabilities	1
Total liabilities held for sale	36
Allowance for doubtful accounts	1
Accumulated depreciation	$ 742

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