Planned Divestiture of the Lumen Mass Markets Fiber-to-the-Home Business - Principal Components of Held for Sale Assets and Liabilities (Details) - Held-for-sale - Lumen Mass Markets fiber-to-the-home business $ in Millions	Sep. 30, 2025 USD ($)
Assets held for sale
Accounts receivable, less allowance of $1	$ 11
Allowance	1
Other current assets, net	8
Property, plant and equipment, net of accumulated depreciation of $584	1,343
Accumulated depreciation	584
Goodwill	1,305
Other assets, net	22
Total Assets held for sale	2,689
Liabilities held for sale
Other current liabilities	2
Current portion of deferred revenue	10
Other non-current liabilities	1
Total Liabilities held for sale	$ 13