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Revenues - Other Balance Sheet Accounts (Details) - USD ($)
$ in Millions

Dec. 31, 2025

Dec. 31, 2024

Revenue from Contract with Customer [Abstract]
 

 

Equipment Installment Plan Receivables, Current
$ 1,276

$ 967

Equipment Installment Plan Receivables, Noncurrent
1,114

980

Equipment Installment Plan Receivables, Allowance for Doubtful Accounts, Noncurrent
117

99

Contract acquisition and fulfillment costs
765

701

Customer prepayments and upfront deferred installation fees
$ 422

$ 456

X

- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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- Definition Amount of allowance for credit loss for right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as noncurrent.

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