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- Definition

Number of Customer Categories

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No definition available.

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- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

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- Definition

Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of impairment loss for asset recognized from cost incurred to obtain or fulfill contract with customer.

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- 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, after allowance for credit loss, of 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 current.

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- Definition

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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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Revenue from Contracts with Customers - Narrative (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2026 USD ($) customer_category	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) customer_category	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Disaggregation of Revenue [Line Items]
Number of customer categories \| customer_category	2		2
Current portion of contract assets	$ 1,000,000,000.0		$ 1,000,000,000.0		$ 920,000,000
Deferred incremental costs to obtain contracts	$ 2,100,000,000		$ 2,100,000,000		$ 2,000,000,000.0
Average amortization period, deferred contract costs (in months)	24 months		24 months
Amortization of deferred costs	$ 479,000,000	$ 478,000,000	$ 952,000,000	$ 963,000,000
Impairment losses recognized on deferred contract cost assets			$ 0	$ 0
Minimum
Disaggregation of Revenue [Line Items]
Remaining contract duration (in years)			1 year
Maximum
Disaggregation of Revenue [Line Items]
Remaining contract duration (in years)			5 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-07-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation	694,000,000		$ 694,000,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation	1,000,000,000.0		1,000,000,000.0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2028-01-01
Disaggregation of Revenue [Line Items]
Remaining performance obligation	2,300,000,000		2,300,000,000
Postpaid revenues
Disaggregation of Revenue [Line Items]
Remaining performance obligation	$ 2,600,000,000		$ 2,600,000,000
Remaining contract duration (in years)			24 months