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Business Combination, Number Of Shares of Acquirer Stock Issued For Each Share Of Acquiree Stock

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Number of Subscribers

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Payments for Asset Acquisitions

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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Number of shares of equity interests issued or issuable to acquire entity.

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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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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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This element represents the amount of any change recognized during the period in the high-end of the estimated range of outcomes (undiscounted) of a liability assumed in a business combination arising from an item of contingent consideration.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Business Combination - Narrative (Details) $ / shares in Units, tower_site in Millions						3 Months Ended				6 Months Ended
	Jul. 01, 2020 USD ($)	Apr. 01, 2020 USD ($) tower_site shares	Feb. 20, 2020 $ / shares shares	May 18, 2018 USD ($)	Apr. 29, 2018 shares	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Jan. 01, 2019 USD ($)
Business Acquisition [Line Items]
Goodwill						$ 10,910,000,000				$ 10,910,000,000		$ 1,930,000,000
Restructuring liability						224,000,000				224,000,000		$ 156,000,000
Payments of consent fees						$ 109,000,000	$ 0			$ 109,000,000	$ 0
DISH \| T-Mobile and Sprint \| Subsequent Event \| Prepaid Business
Business Acquisition [Line Items]
Payments for asset acquisition	$ 1,400,000,000
Sprint
Business Acquisition [Line Items]
Exchange ratio (in shares) \| shares					9.75
Exchange ratio (in shares) \| shares					0.10256
Stock issued (in shares) \| shares		373,396,310
Value of common stock provided in exchange for acquiree common stock		$ 31,328,000,000
Fully-diluted shares of combined company held by public stockholders (percent)						31.70%				31.70%
Goodwill		9,198,000,000
Value of contingent consideration		1,882,000,000
Contingent consideration, high end of range		7,300,000,000
Transaction costs						$ 145,000,000	$ 25,000,000			$ 184,000,000	$ 51,000,000
Transaction costs assumed to have occurred													$ 542,000,000
Restructuring liability						255,000,000				$ 255,000,000
Total revenue subsequent to Merger date						6,300,000,000
Operating income subsequent to Merger date						$ 15,000,000
Sprint \| Customer relationships
Business Acquisition [Line Items]
Finite-lived, Fair Value (in millions)		$ 4,900,000,000
Weighted Average Useful Life (in years)		8 years
Sprint \| Trademarks
Business Acquisition [Line Items]
Weighted Average Useful Life (in years)		2 years
Sprint \| Favorable lease (asset)
Business Acquisition [Line Items]
Finite-lived, Fair Value (in millions)		$ 790,000,000
Weighted Average Useful Life (in years)		18 years
Sprint \| Unfavorable lease (liability)
Business Acquisition [Line Items]
Finite-lived, Fair Value (in millions)		$ 197,000,000
Weighted Average Useful Life (in years)		19 years
Sprint \| DT
Business Acquisition [Line Items]
Payments of consent fees									$ 7,000,000
Payments for requisite consents to DT		$ 13,000,000
Sprint \| Shentel
Business Acquisition [Line Items]
Number of subscribers \| tower_site		1.1
Right to decline period		60 days
Sell or decommission, transfer period		2 years
Sprint \| Senior Notes
Business Acquisition [Line Items]
Payments for requisite consents to third-party note holders				$ 95,000,000				$ 54,000,000
Sprint \| Secured Term Loan Facility
Business Acquisition [Line Items]
Financing commitment, amount		$ 4,000,000,000.0
Sprint \| Secured bridge loan facility due 2021
Business Acquisition [Line Items]
Financing commitment, amount		19,000,000,000.0
Sprint \| Secured and Unsecured Debt Financing
Business Acquisition [Line Items]
Payments of consent fees		$ 355,000,000
Sprint \| SoftBank
Business Acquisition [Line Items]
Fully-diluted shares expected to be held immediately following merger (percent)						24.70%				24.70%
Sprint \| DT
Business Acquisition [Line Items]
Fully-diluted shares expected to be held immediately following merger (percent)						43.60%				43.60%
Sprint \| Common Stock
Business Acquisition [Line Items]
Exchange ratio (in shares) \| shares			11.00
Sprint \| Common Stock \| SoftBank
Business Acquisition [Line Items]
Aggregate surrendered (in shares) \| shares			48,751,557
Exchange ratio (in shares) \| shares			11.31
Volume-weighted average price (in USD per share) \| $ / shares			$ 150.00
Number of shares issued if threshold not met (in shares) \| shares			0