T-Mobile US (TMUS) 10-Q20 Jul 172017 Q2 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2017	Jul. 17, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	T-MOBILE US, INC.
Trading Symbol	TMUS
Entity Central Index Key	1,283,699
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Amendment Flag	false
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		831,048,573

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 181	$ 5,500
Accounts receivable, net of allowances of $83 and $102	1,719	1,896
Equipment installment plan receivables, net	2,060	1,930
Accounts receivable from affiliates	32	40
Inventories	1,208	1,111
Asset purchase deposit	0	2,203
Other current assets	1,580	1,537
Total current assets	6,780	14,217
Property and equipment, net	21,423	20,943
Goodwill	1,683	1,683
Spectrum licenses	35,060	27,014
Other intangible assets, net	296	376
Equipment installment plan receivables due after one year, net	1,102	984
Other assets	815	674
Total assets	67,159	65,891
Current liabilities
Accounts payable and accrued liabilities	6,225	7,152
Payables to affiliates	155	125
Short-term debt	522	354
Short-term debt to affiliates	680	0
Deferred revenue	851	986
Other current liabilities	395	405
Total current liabilities	8,828	9,022
Long-term debt	13,206	21,832
Long-term debt to affiliates	14,086	5,600
Tower obligations	2,606	2,621
Deferred tax liabilities	5,188	4,938
Deferred rent expense	2,660	2,616
Other long-term liabilities	971	1,026
Total long-term liabilities	38,717	38,633
Commitments and contingencies (Note 9)
Stockholders' equity
5.50% Mandatory Convertible Preferred Stock Series A, par value $0.00001 per share, 100,000,000 shares authorized; 20,000,000 and 20,000,000 shares issued and outstanding; $1,000 and $1,000 aggregate liquidation value	0	0
Common Stock, par value $0.00001 per share, 1,000,000,000 shares authorized; 832,476,169 and 827,768,818 shares issued, 831,021,302 and 826,357,331 shares outstanding	0	0
Additional paid-in capital	38,946	38,846
Treasury stock, at cost, 1,454,867 and 1,411,487 shares issued	(4)	(1)
Accumulated other comprehensive income	3	1
Accumulated deficit	(19,331)	(20,610)
Total stockholders' equity	19,614	18,236
Total liabilities and stockholders' equity	$ 67,159	$ 65,891

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Allowances	$ 83	$ 102
Annual dividend rate	5.50%	5.50%
5.50% Mandatory convertible preferred stock series A, par value (in USD per share)	$ 0.00001	$ 0.00001
5.50% Mandatory convertible preferred stock series A, shares authorized (in shares)	100,000,000	100,000,000
5.50% Mandatory convertible preferred stock series A, shares issued (in shares)	20,000,000	20,000,000
5.50% Mandatory convertible preferred stock series A, shares outstanding (in shares)	20,000,000	20,000,000
5.50% Mandatory convertible preferred stock series A, aggregate liquidation value	$ 1,000	$ 1,000
Common stock, par value (in USD per share)	$ 0.00001	$ 0.00001
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	832,476,169	827,768,818
Common stock, shares outstanding (in shares)	831,021,302	826,357,331
Treasury stock, at cost (in shares)	1,454,867	1,411,487

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Branded postpaid revenues	$ 4,820	$ 4,509	$ 9,545	$ 8,811
Branded prepaid revenues	2,334	2,119	4,633	4,144
Wholesale revenues	234	207	504	407
Roaming and other service revenues	57	53	92	104
Total service revenues	7,445	6,888	14,774	13,466
Equipment revenues	2,506	2,188	4,549	4,039
Other revenues	262	211	503	446
Total revenues	10,213	9,287	19,826	17,951
Operating expenses
Cost of services, exclusive of depreciation and amortization shown separately below	1,518	1,429	2,926	2,850
Cost of equipment sales	2,846	2,619	5,532	4,993
Selling, general and administrative	2,915	2,772	5,870	5,521
Depreciation and amortization	1,519	1,575	3,083	3,127
Cost of MetroPCS business combination	0	59	0	95
Gains on disposal of spectrum licenses	(1)	0	(38)	(636)
Total operating expense	8,797	8,454	17,373	15,950
Operating income	1,416	833	2,453	2,001
Other income (expense)
Interest expense	(265)	(368)	(604)	(707)
Interest expense to affiliates	(131)	(93)	(231)	(172)
Interest income	6	3	13	6
Other expense, net	(92)	(3)	(90)	(5)
Total other expense, net	(482)	(461)	(912)	(878)
Income before income taxes	934	372	1,541	1,123
Income tax expense	(353)	(147)	(262)	(419)
Dividends on preferred stock	(14)	(14)	(28)	(28)
Net income attributable to common stockholders	567	211	1,251	676
Net income	581	225	1,279	704
Other comprehensive income, net of tax
Unrealized gain on available-for-sale securities, net of tax effect $1, $2, $2 and $0	1	3	2	0
Other comprehensive income	1	3	2	0
Total comprehensive income	$ 582	$ 228	$ 1,281	$ 704
Earnings per share
Basic (in USD per share)	$ 0.68	$ 0.26	$ 1.51	$ 0.82
Diluted (in USD per share)	$ 0.67	$ 0.25	$ 1.47	$ 0.81
Weighted average shares outstanding
Basic (in shares)	830,971,528	822,434,490	829,356,255	820,933,126
Diluted (in shares)	870,456,447	829,752,956	870,853,652	829,662,053

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Unrealized gain (loss) on available-for-sale securities, tax	$ 1	$ 2	$ 2	$ 0

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating activities
Net Income	$ 581	$ 225	$ 1,279	$ 704
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	1,519	1,575	3,083	3,127
Stock-based compensation expense	72	60	139	112
Deferred income tax expense	345	140	248	404
Bad debt expense	82	119	175	240
Losses from sales of receivables	80	46	175	98
Deferred rent expense	20	33	40	65
Gains on disposal of spectrum licenses	(1)	0	(38)	(636)
Changes in operating assets and liabilities
Accounts receivable	21	(105)	(47)	(307)
Equipment installment plan receivables	(353)	343	(366)	452
Inventories	(185)	3	(141)	(798)
Deferred purchase price from sales of receivables	1	(204)	(18)	(183)
Other current and long-term assets	(135)	(56)	(146)	129
Accounts payable and accrued liabilities	56	(345)	(595)	(837)
Other current and long term liabilities	(189)	(74)	(144)	214
Other, net	(85)	8	(102)	9
Net cash provided by operating activities	1,829	1,768	3,542	2,793
Investing activities
Purchases of property and equipment, including capitalized interest of $34, $18, $82 and $54	(1,347)	(1,349)	(2,875)	(2,684)
Purchases of spectrum licenses and other intangible assets, including deposits	(5,791)	(2,245)	(5,805)	(2,839)
Sales of short-term investments	0	2,923	0	2,998
Other, net	5	4	(3)	(2)
Net cash used in investing activities	(7,133)	(667)	(8,683)	(2,527)
Financing activities
Proceeds from issuance of long-term debt	4,485	997	9,980	997
Proceeds from borrowing on revolving credit facility	1,855	0	1,855	0
Repayments of revolving credit facility	(1,175)	0	(1,175)	0
Repayments of capital lease obligations	(119)	(43)	(209)	(79)
Repayments of short-term debt for purchases of inventory, property and equipment, net	(292)	(150)	(292)	(150)
Repayments of long-term debt	(6,750)	(5)	(10,230)	(10)
Tax withholdings on share-based awards	(3)	(3)	(95)	(49)
Dividends on preferred stock	(14)	(14)	(28)	(28)
Other, net	(3)	8	16	9
Net cash (used in) provided by financing activities	(2,016)	790	(178)	690
Change in cash and cash equivalents	(7,320)	1,891	(5,319)	956
Cash and cash equivalents
Beginning of period	7,501	3,647	5,500	4,582
End of period	181	5,538	181	5,538
Supplemental disclosure of cash flow information
Interest payments, net of amounts capitalized, $79, $0, $79, $0 of which recorded as debt discount (Note 6)	727	399	1,222	814
Income tax payments	6	17	21	19
Changes in accounts payable for purchases of property and equipment	(8)	101	317	228
Leased devices transferred from inventory to property and equipment	270	157	513	941
Returned leased devices transferred from property and equipment to inventory	(273)	(105)	(470)	(236)
Issuance of short-term debt for financing of property and equipment	2	0	290	150
Assets acquired under capital lease obligations	$ 313	$ 171	$ 597	$ 295

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows (Unaudited) Condensed Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Capitalized interest	$ 34	$ 18	$ 82	$ 54
Deutsche Telekom [Member]
Discount	$ 79	$ 0	$ 79	$ 0

Basis of Presentation (Notes)

Basis of Presentation (Notes)	6 Months Ended
Basis of Presentation (Notes)	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Note 1 – Basis of Presentation The unaudited condensed consolidated financial statements of T-Mobile US, Inc. (“T-Mobile,” “we,” “our,” “us” or the “Company”) include all adjustments of a normal recurring nature necessary for the fair presentation of the results for the interim periods presented. The results for the interim periods are not necessarily indicative of those for the full year. The condensed consolidated financial statements should be read in conjunction with our consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2016 . The condensed consolidated financial statements include the balances and results of operations of T-Mobile and our consolidated subsidiaries. We consolidate majority-owned subsidiaries over which we exercise control, as well as variable interest entities (“VIE”) where we are deemed to be the primary beneficiary and VIEs which cannot be deconsolidated, such as those related to Tower obligations (Tower obligations are included in VIEs related to the 2012 Tower Transaction. See Note 8 - Tower Obligations included in the Annual Report on Form 10-K for the year ended December 31, 2016 ). Intercompany transactions and balances have been eliminated in consolidation. The preparation of financial statements in conformity with United States (“U.S.”) generally accepted accounting principles (“GAAP”) requires our management to make estimates and assumptions which affect the financial statements and accompanying notes. Estimates are based on historical experience, where applicable, and other assumptions which our management believes are reasonable under the circumstances. These estimates are inherently subject to judgment and actual results could differ from those estimates. Change in Accounting Principle Effective January 1, 2017, the imputed discount on Equipment Installment Plan (“EIP”) receivables, which is amortized over the financed installment term using the effective interest method, and was previously presented within Interest income in our Condensed Consolidated Statements of Comprehensive Income, is now presented within Other revenues in our Condensed Consolidated Statements of Comprehensive Income. We believe this presentation is preferable because it provides a better representation of amounts earned from our major ongoing operations and aligns with industry practice thereby enhancing comparability. We have applied this change retrospectively and presented the effect on the three and six months ended June 30, 2017 and 2016 , in the tables below: Three Months Ended June 30, 2017 Three Months Ended June 30, 2016 (in millions) Unadjusted Change in Accounting Principle As Adjusted As Filed Change in Accounting Principle As Adjusted Other revenues $ 194 $ 68 $ 262 $ 146 $ 65 $ 211 Total revenues 10,145 68 10,213 9,222 65 9,287 Operating income 1,348 68 1,416 768 65 833 Interest income 74 (68 ) 6 68 (65 ) 3 Total other expense, net (414 ) (68 ) (482 ) (396 ) (65 ) (461 ) Net income 581 — 581 225 — 225 Six Months Ended June 30, 2017 Six Months Ended June 30, 2016 (in millions) Unadjusted Change in Accounting Principle As Adjusted As Filed Change in Accounting Principle As Adjusted Other revenues $ 373 $ 130 $ 503 $ 316 $ 130 $ 446 Total revenues 19,696 130 19,826 17,821 130 17,951 Operating income 2,323 130 2,453 1,871 130 2,001 Interest income 143 (130 ) 13 136 (130 ) 6 Total other expense, net (782 ) (130 ) (912 ) (748 ) (130 ) (878 ) Net income 1,279 — 1,279 704 — 704 The change in accounting principle did not have an impact on basic or diluted earnings per share for the three and six months ended June 30, 2017 and 2016 , or Accumulated deficit as of June 30, 2017 or December 31, 2016 . Accounting Pronouncements Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”), and has since modified the standard with several ASU’s. The standard is effective for us, and we will adopt the standard, on January 1, 2018. The standard requires entities to recognize revenue through the application of a five-step model, which includes: identification of the contract; identification of the performance obligations; determination of the transaction price; allocation of the transaction price to the performance obligations; and recognition of revenue as the entity satisfies the performance obligations. The guidance permits two methods of adoption, the full retrospective method applying the standard to each prior reporting period presented, or the modified retrospective method with a cumulative effect of initially applying the guidance recognized at the date of initial application. The standard also allows entities to apply certain practical expedients at their discretion. We are adopting the standard using the modified retrospective method with a cumulative catch up adjustment and will provide additional disclosures comparing results to previous rules. We continue to evaluate the impact of the new standard but anticipate this standard will have a material impact on our consolidated financial statements. While we are continuing to assess all potential impacts of the standard, we currently believe the most significant impacts may include the following items: • Whether our EIP contracts contain a significant financing component, which is similar to our current practice of imputing interest, and would similarly impact the amount of revenue recognized at the time of an EIP sale and whether or not a portion of the revenue is recognized as interest and included in other revenues, rather than equipment revenues. • As we currently expense contract acquisition costs, we believe that the requirement to defer incremental contract acquisition costs and recognize them over the term of the initial contract and anticipated renewal contracts to which the costs relate will have a significant impact to our consolidated financial statements. We plan to utilize the practical expedient permitting expensing of costs to obtain a contract when the expected amortization period is one year or less. • Whether bill credits earned over time result in extended service contracts, which would impact the allocation and timing of revenue recognition between service revenue and equipment revenue. • Overall, with the exception of the aforementioned impacts, we do not expect that the new standard will result in a substantive change to the method of allocation of contract revenues between various services and equipment, nor to the timing of when revenues are recognized for most of our service contracts. We are still in the process of evaluating these impacts, and our initial assessment may change due to changes in the terms and mix of the contractual arrangements we have with customers. New products or offerings, or changes to current offerings may yield significantly different impacts than currently expected. We are in the process of implementing significant new revenue accounting systems, processes and internal controls over revenue recognition which will ultimately assist us in the application of the new standard. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” The standard requires all lessees to report a right-of-use asset and a lease liability for most leases. The income statement recognition is similar to existing lease accounting and is based on lease classification. The standard requires lessees and lessors to classify most leases using principles similar to existing lease accounting, but eliminates the “bright line” classification tests. For lessors, the standard modifies the classification criteria and the accounting for sales-type and direct financing leases. We are currently evaluating the standard, which will require recognizing and measuring leases at the beginning of the earliest period presented using a modified retrospective approach. We plan to adopt the standard when it becomes effective for us beginning January 1, 2019 and expect the adoption of the standard will result in the recognition of right to use assets and liabilities that have not previously been recorded, which will have a material impact on our condensed consolidated financial statements . In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” The standard requires a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions and reasonable and supportable forecasts that affect the collectibility of the reported amount. The standard will become effective for us beginning January 1, 2020, and will require a cumulative-effect adjustment to Accumulated deficit as of the beginning of the first reporting period in which the guidance is effective (that is, a modified-retrospective approach). Early adoption is permitted for us as of January 1, 2019. We are currently evaluating the impact this guidance will have on our condensed consolidated financial statements and the timing of adoption. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments.” The standard is intended to reduce current diversity in practice and provides guidance on how certain cash receipts and payments are presented and classified in the statement of cash flows. The standard will become effective for us beginning January 1, 2018, and will require a retrospective approach. Early adoption is permitted, including adoption in an interim period. We are currently evaluating the timing of adoption. The standard will impact the presentation of cash flows related to beneficial interests in securitization, which is the deferred purchase price, resulting in a reclassification of cash inflows from Operating activities to Investing activities of approximately $800 million and $900 million for the three months ended June 30, 2017 and 2016 , respectively, and $1.8 billion for both the six months ended June 30, 2017 and 2016 in our condensed consolidated statement of cash flows. The standard will also impact the presentation of cash payments for debt prepayment or debt extinguishment costs, resulting in a reclassification of cash outflows from Operating activities to Financing activities of $159 million and $188 million for the three and six months ended June 30, 2017, respectively, in our condensed consolidated statement of cash flows. In October 2016, the FASB issued ASU 2016-16, “Accounting for Income Taxes: Intra-Entity Transfers of Assets Other Than Inventory.” The standard requires that the income tax impact of intra-entity sales and transfers of property, except for inventory, be recognized when the transfer occurs. The standard will become effective for us beginning January 1, 2018, and will require any deferred taxes not yet recognized on intra-entity transfers to be recorded to retained earnings under a modified retrospective approach. Early adoption is permitted. We are currently evaluating the standard, but expect that it will not have a material impact on our condensed consolidated financial statements. In November 2016, the FASB issued ASU 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash.” The standard requires entities to include in their cash and cash-equivalent balances in the statement of cash flows those amounts that are deemed to be restricted cash and restricted cash equivalents. The ASU does not define the terms “restricted cash” and “restricted cash equivalents.” The standard will be effective for us beginning January 1, 2018, and will require a retrospective approach. Early adoption is permitted. We are currently evaluating the standard, but expect that it will not have a material impact on our condensed consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” The standard eliminates the requirement to measure the implied fair value of goodwill by assigning the fair value of a reporting unit to all assets and liabilities within that unit (“the Step 2 test”) from the goodwill impairment test. Instead, if the carrying amount of a reporting unit exceeds its fair value, an impairment loss is recognized in an amount equal to that excess, limited by the amount of goodwill in that reporting unit. The standard will become effective for us beginning January 1, 2020, and must be applied to any annual or interim goodwill impairment assessments after that date. Early adoption is permitted. We are currently evaluating the standard and timing of adoption, but expect that it will not have a material impact on our condensed consolidated financial statements.

Equipment Installment Plan Rece

Equipment Installment Plan Receivables (Notes)	6 Months Ended
Equipment Installment Plan Receivables (Notes)	Jun. 30, 2017
Receivables [Abstract]
Equipment Installment Plan Receivables	Note 2 – Equipment Installment Plan Receivables We offer certain retail customers the option to pay for their devices and accessories in installments over a period of up to 24 months using an EIP. The following table summarizes the EIP receivables: (in millions) June 30, December 31, EIP receivables, gross $ 3,496 $ 3,230 Unamortized imputed discount (231 ) (195 ) EIP receivables, net of unamortized imputed discount 3,265 3,035 Allowance for credit losses (103 ) (121 ) EIP receivables, net $ 3,162 $ 2,914 Classified on the balance sheet as: Equipment installment plan receivables, net $ 2,060 $ 1,930 Equipment installment plan receivables due after one year, net 1,102 984 EIP receivables, net $ 3,162 $ 2,914 We use a proprietary credit scoring model that measures the credit quality of a customer at the time of application for mobile communications service using several factors, such as credit bureau information, consumer credit risk scores and service plan characteristics. Based upon customer credit profiles, we classify EIP receivables into the credit categories of “Prime” and “Subprime.” Prime customer receivables are those with lower delinquency risk and Subprime customer receivables are those with higher delinquency risk. Subprime customers may be required to make a down payment on their equipment purchases. In addition, certain customers within the Subprime category are required to pay an advance deposit. EIP receivables for which invoices have not yet been generated for the customer are classified as Unbilled. EIP receivables for which invoices have been generated but which are not past the contractual due date are classified as Billed – Current . EIP receivables for which invoices have been generated and the payment is past the contractual due date are classified as Billed – Past Due . The balance and aging of the EIP receivables on a gross basis by credit category were as follows: June 30, 2017 December 31, 2016 (in millions) Prime Subprime Total Prime Subprime Total Unbilled $ 1,416 $ 1,871 $ 3,287 $ 1,343 $ 1,686 $ 3,029 Billed – Current 57 83 140 51 77 128 Billed – Past Due 24 45 69 25 48 73 EIP receivables, gross $ 1,497 $ 1,999 $ 3,496 $ 1,419 $ 1,811 $ 3,230 Activity for the six months ended June 30, 2017 and 2016 , in the unamortized imputed discount and allowance for credit losses balances for the EIP receivables was as follows: (in millions) June 30, June 30, Imputed discount and allowance for credit losses, beginning of period $ 316 $ 333 Bad debt expense 119 126 Write-offs, net of recoveries (137 ) (137 ) Change in imputed discount on short-term and long-term EIP receivables 121 83 Impacts from sales of EIP receivables (85 ) (91 ) Imputed discount and allowance for credit losses, end of period $ 334 $ 314 The EIP receivables had weighted average effective imputed interest rates of 9.7% and 9.0% as of June 30, 2017 and December 31, 2016 , respectively.

Sales of Certain Receivables (N

Sales of Certain Receivables (Notes)	6 Months Ended
Sales of Certain Receivables (Notes)	Jun. 30, 2017
Transfers and Servicing [Abstract]
Sales of Certain Receivables	Note 3 – Sales of Certain Receivables We have entered into transactions to sell certain service and EIP accounts receivables. The transactions, including our continuing involvement with the sold receivables and the respective impacts to our financial statements, are described below. Sales of Service Receivables Overview of the Transaction In 2014, we entered into an arrangement to sell certain service accounts receivables on a revolving basis and in November 2016, the arrangement was amended to increase the maximum funding commitment to $950 million (the “service receivable sale arrangement”) with a scheduled expiration date in March 2018 . As of June 30, 2017 and December 31, 2016 , the service receivable sale arrangement provided funding of $879 million and $907 million , respectively. Sales of receivables occur daily and are settled on a monthly basis. The receivables consist of service charges currently due from customers and are short-term in nature. In connection with the service receivable sale arrangement, we formed a wholly-owned subsidiary, which qualifies as a bankruptcy remote entity to sell service accounts receivables (the “Service BRE”). The Service BRE does not qualify as a Variable Interest Entity (“VIE”), and due to the significant level of control we exercise over the entity, it is consolidated. Pursuant to the arrangement, certain of our wholly-owned subsidiaries transfer selected receivables to the Service BRE. The Service BRE then sells the receivables to an unaffiliated entity (the “Service VIE”), which was established to facilitate the sale of beneficial ownership interests in the receivables to certain third parties. Variable Interest Entity We determined that the Service VIE qualifies as a VIE as it lacks sufficient equity to finance its activities. We have a variable interest in the Service VIE, but are not the primary beneficiary as we lack the power to direct the activities that most significantly impact the Service VIE’s economic performance. Those activities include committing the Service VIE to legal agreements to purchase or sell assets, selecting which receivables are purchased in the service receivable sale arrangement, determining whether the Service VIE will sell interests in the purchased service receivables to other parties, funding of the entities and servicing of receivables. We do not hold the power to direct the key decisions underlying these activities. For example, while we act as the servicer of the sold receivables, which is considered a significant activity of the Service VIE, we are acting as an agent in our capacity as the servicer and the counterparty to the service receivable sale arrangement has the ability to remove us as the servicing agent of the receivables at will with no recourse available to us. As we have determined we are not the primary beneficiary, the results of the Service VIE are not consolidated into our condensed consolidated financial statements . The following table summarizes the carrying amounts and classification of assets, which consists primarily of the deferred purchase price and liabilities included in our Condensed Consolidated Balance Sheets that relate to our variable interest in the Service VIE: (in millions) June 30, December 31, Other current assets $ 223 $ 207 Accounts payable and accrued liabilities — 17 Other current liabilities 145 129 Sales of EIP Receivables Overview of the Transaction In 2015, we entered into an arrangement to sell certain EIP accounts receivables on a revolving basis and in June 2016, the EIP sale arrangement was amended to increase the maximum funding commitment to $1.3 billion (the “EIP sale arrangement”) with a scheduled expiration date in November 2017 . As of June 30, 2017 and December 31, 2016 , the EIP sale arrangement provided funding of $1.2 billion each period. Sales of EIP receivables occur daily and are settled on a monthly basis. The receivables consist of customer EIP balances, which require monthly customer payments for up to 24 months. In connection with this EIP sale arrangement, we formed a wholly-owned subsidiary, which qualifies as a bankruptcy remote entity (the “EIP BRE”). Pursuant to the EIP sale arrangement, our wholly-owned subsidiary transfers selected receivables to the EIP BRE. The EIP BRE then sells the receivables to a non-consolidated and unaffiliated third-party entity for which we do not exercise any level of control, nor does the entity qualify as a VIE. Variable Interest Entity We determined that the EIP BRE is a VIE as its equity investment at risk lacks the obligation to absorb a certain portion of its expected losses. We have a variable interest in the EIP BRE and determined that we are the primary beneficiary based on our ability to direct the activities which most significantly impact the EIP BRE’s economic performance. Those activities include selecting which receivables are transferred into the EIP BRE and sold in the EIP sale arrangement and funding of the EIP BRE. Additionally, our equity interest in the EIP BRE obligates us to absorb losses and gives us the right to receive benefits from the EIP BRE that could potentially be significant to the EIP BRE. Accordingly, we determined that we are the primary beneficiary, and include the balances and results of operations of the EIP BRE in our condensed consolidated financial statements . The following table summarizes the carrying amounts and classification of assets, which consists primarily of the deferred purchase price and liabilities included in our Condensed Consolidated Balance Sheets that relate to the EIP BRE: (in millions) June 30, December 31, Other current assets $ 349 $ 371 Other assets 106 83 Other long-term liabilities 3 4 In addition, the EIP BRE is a separate legal entity with its own separate creditors who will be entitled, prior to any liquidation of the EIP BRE, to be satisfied prior to any value in the EIP BRE becoming available to us. Accordingly, the assets of the EIP BRE may not be used to settle our general obligations and creditors of the EIP BRE have limited recourse to our general credit. Sales of Receivables The transfers of service receivables and EIP receivables to the non-consolidated entities are accounted for as sales of financial assets. Once identified for sale, the receivable is recorded at the lower of cost or fair value. Upon sale, we derecognize the net carrying amount of the receivables. We recognize the net cash proceeds in Net cash provided by operating activities in our Condensed Consolidated Statements of Cash Flows . The proceeds are net of the deferred purchase price, consisting of a receivable from the purchasers that entitles us to certain collections on the receivables. We recognize the collection of the deferred purchase price in Net cash provided by operating activities as it is dependent on collection of the customer receivables and is not subject to significant interest rate risk. The deferred purchase price represents a financial asset that is primarily tied to the creditworthiness of the customers and which can be settled in such a way that we may not recover substantially all of our recorded investment, due to default by the customers on the underlying receivables. We elected, at inception, to measure the deferred purchase price at fair value with changes in fair value included in Selling, general and administrative expense in our Condensed Consolidated Statements of Comprehensive Income . The fair value of the deferred purchase price is determined based on a discounted cash flow model which uses primarily unobservable inputs (Level 3 inputs), including customer default rates. As of June 30, 2017 and December 31, 2016 , our deferred purchase price related to the sales of service receivables and EIP receivables was $676 million and $659 million , respectively. The following table summarizes the impacts of the sale of certain service receivables and EIP receivables in our Condensed Consolidated Balance Sheets : (in millions) June 30, December 31, Derecognized net service receivables and EIP receivables $ 2,422 $ 2,502 Other current assets 572 578 of which, deferred purchase price 570 576 Other long-term assets 106 83 of which, deferred purchase price 106 83 Accounts payable and accrued liabilities — 17 Other current liabilities 145 129 Other long-term liabilities 3 4 Net cash proceeds since inception 1,952 2,030 Of which: Change in net cash proceeds during the year-to-date period (78 ) 536 Net cash proceeds funded by reinvested collections 2,030 1,494 We recognized losses from sales of receivables of $80 million and $46 million for the three months ended June 30, 2017 and 2016 , respectively, and $175 million and $98 million for the six months ended June 30, 2017 and 2016 , respectively. These losses from sales of receivables were recognized in Selling, general and administrative expense in our Condensed Consolidated Statements of Comprehensive Income . Losses from sales of receivables include adjustments to the receivables’ fair values and changes in fair value of the deferred purchase price. Continuing Involvement Pursuant to the sale arrangements described above, we have continuing involvement with the service receivables and EIP receivables we sell as we service the receivables and are required to repurchase certain receivables, including ineligible receivables, aged receivables and receivables where write-off is imminent. We continue to service the customers and their related receivables, including facilitating customer payment collection, in exchange for a monthly servicing fee. As the receivables are sold on a revolving basis, the customer payment collections on sold receivables may be reinvested in new receivable sales. While servicing the receivables, we apply the same policies and procedures to the sold receivables as we apply to our owned receivables, and we continue to maintain normal relationships with our customers. Pursuant to the EIP sale arrangement, under certain circumstances, we are required to deposit cash or replacement EIP receivables primarily for contracts terminated by customers under our Just Upgrade My Phone (“JUMP!”) Program. In addition, we have continuing involvement with the sold receivables as we may be responsible for absorbing additional credit losses pursuant to the sale arrangements. Our maximum exposure to loss related to the involvement with the service receivables and EIP receivables sold under the sale arrangements was $1.2 billion as of June 30, 2017 . The maximum exposure to loss, which is a required disclosure under GAAP, represents an estimated loss that would be incurred under severe, hypothetical circumstances whereby we would not receive the deferred purchase price portion of the contractual proceeds withheld by the purchasers and would also be required to repurchase the maximum amount of receivables pursuant to the sale arrangements without consideration for any recovery. As we believe the probability of these circumstances occurring is remote, the maximum exposure to loss is not an indication of our expected loss.

Spectrum License Transactions (

Spectrum License Transactions (Notes)	6 Months Ended
Spectrum License Transactions (Notes)	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Spectrum License Transactions	Note 4 – Spectrum License Transactions The following table summarizes our spectrum license activity during the first half of 2017 : (in millions) Spectrum Licenses Balance at December 31, 2016 $ 27,014 Spectrum license acquisitions 8,130 Spectrum licenses transferred to held for sale (87 ) Costs to clear spectrum 3 Balance at June 30, 2017 $ 35,060 Spectrum License Exchange In March 2017, we closed on an agreement with a third party for the exchange of certain spectrum licenses. Upon closing of the transaction, we recorded the spectrum licenses received at their estimated fair value of approximately $123 million and recognized a gain of $37 million included in Gains on disposal of spectrum licenses in our Condensed Consolidated Statements of Comprehensive Income . In April 2017, we entered into an agreement with a third party for the exchange of certain AWS and PCS spectrum licenses. The transaction is expected to close during the second half of 2017, subject to regulatory approvals and customary closing conditions. Our spectrum licenses to be transferred as part of the exchange transaction were reclassified as assets held for sale and were included in Other current assets in our Condensed Consolidated Balance Sheets at their carrying value of $86 million as of June 30, 2017 . Broadcast Incentive Auction In April 2017, the Federal Communications Commission (the “FCC”) announced that we were the winning bidder of 1,525 licenses in the 600 MHz spectrum auction for an aggregate price of $8.0 billion . At the inception of the auction in June 2016, we deposited $2.2 billion with the FCC which, based on the outcome of the auction, was sufficient to cover our down payment obligation due in April 2017. In May 2017, we paid the FCC the remaining $5.8 billion of the purchase price using cash reserves and by issuing debt to Deutsche Telekom AG (“DT”), our majority stockholder, pursuant to existing purchase commitments. See Note 6 - Debt for further information. The licenses are included in Spectrum licenses as of June 30, 2017 , on our Condensed Consolidated Balance Sheets . We expect to begin deployment of these licenses on our network in the second half of 2017 .

Fair Value Measurements (Notes)

Fair Value Measurements (Notes)	6 Months Ended
Fair Value Measurements (Notes)	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 5 – Fair Value Measurements The carrying values of cash and cash equivalents, short-term investments, accounts receivable, accounts receivable from affiliates, accounts payable, and borrowings under our senior secured revolving credit facility with DT approximate fair value due to the short-term maturities of these instruments. Assets and Liabilities Measured at Fair Value on a Recurring Basis The carrying amounts and fair values of our short-term investments and long-term debt included in our Condensed Consolidated Balance Sheets were as follows: Level within the Fair Value Hierarchy June 30, 2017 December 31, 2016 (in millions) Carrying Amount Fair Value Carrying Amount Fair Value Assets: Deferred purchase price assets 3 $ 676 $ 676 $ 659 $ 659 Liabilities: Guarantee liabilities 3 124 124 135 135 Level within the Fair Value Hierarchy June 30, 2017 December 31, 2016 (in millions) Principal Amount Fair Value Principal Amount Fair Value Liabilities: Senior Notes to third parties 1 $ 11,850 $ 12,691 $ 18,600 $ 19,584 Senior Notes to affiliates 2 7,000 7,243 — — Senior Reset Notes to affiliates 2 3,100 3,343 5,600 5,955 Incremental Term Loan Facility to affiliates 2 4,000 4,000 — — Senior Secured Term Loans 2 — — 1,980 2,005 Long-term Debt The fair value of our Senior Notes to third parties was determined based on quoted market prices in active markets, and therefore was classified as Level 1 in the fair value hierarchy. The fair value of the Senior Secured Term Loans, Incremental Term Loan Facility to affiliates, Senior Notes to affiliates and Senior Reset Notes to affiliates was determined based on a discounted cash flow approach using quoted prices of instruments with similar terms and maturities and an estimate for our standalone credit risk. Accordingly, our Senior Secured Term Loans, Incremental Term Loan Facility to affiliates, Senior Notes to affiliates and Senior Reset Notes to affiliates were classified as Level 2 in the fair value hierarchy. Although we have determined the estimated fair values using available market information and commonly accepted valuation methodologies, considerable judgment was required in interpreting market data to develop fair value estimates for the Senior Secured Term Loans, Incremental Term Loan Facility to affiliates, Senior Notes to affiliates and Senior Reset Notes to affiliates. The fair value estimates were based on information available as of June 30, 2017 and December 31, 2016 . As such, our estimates are not necessarily indicative of the amount we could realize in a current market exchange. As of June 30, 2017 , the carrying value of the Incremental Term Loan Facility to affiliates approximates fair value, due to our ability to call the facility without penalty. Deferred Purchase Price Assets In connection with the sales of certain service and EIP receivables pursuant to the sale arrangements, we have deferred purchase price assets measured at fair value that are based on a discounted cash flow model using unobservable Level 3 inputs, including customer default rates. See Note 3 – Sales of Certain Receivables for further information . Guarantee Liabilities We offer a device trade-in program, JUMP!, which provides eligible customers a specified-price trade-in right to upgrade their device. For customers who enroll in the device trade-in program, we defer the portion of equipment revenues which represents the estimated fair value of the specified-price trade-in right guarantee incorporating the expected probability and timing of the handset upgrade and the estimated fair value of the used handset which is returned. Accordingly, our guarantee liabilities were classified as Level 3 in the fair value hierarchy. When customers upgrade their device, the difference between the trade-in credit to the customer and the fair value of the returned device is recorded against the guarantee liabilities. Guarantee liabilities are included in Other current liabilities in our Condensed Consolidated Balance Sheets . The total estimated remaining gross EIP receivable balances of all enrolled handset upgrade program customers, which are the remaining EIP amounts underlying the JUMP! guarantee, including EIP receivables that have been sold, was $2.2 billion as of June 30, 2017 . This is not an indication of our expected loss exposure as it does not consider the expected fair value of the used handset or the probability and timing of the trade-in.

Debt (Notes)

Debt (Notes)	6 Months Ended
Debt (Notes)	Jun. 30, 2017
Debt Disclosure [Abstract]
Debt	Note 6 – Debt The following table sets forth the debt balances and activity as of, and for the six months ended , June 30, 2017 : (in millions) December 31, Issuances and Borrowings (1) Note Redemptions (1) Extinguishments (1) Other (2) June 30, Short-term debt $ 354 $ — $ — $ (20 ) $ 188 $ 522 Long-term debt 21,832 1,495 (8,365 ) (1,947 ) 191 13,206 Total debt to third parties 22,186 1,495 (8,365 ) (1,967 ) 379 13,728 Short-term debt to affiliates — 680 — — — 680 Long-term debt to affiliates 5,600 8,485 — — 1 14,086 Total debt to affiliates 5,600 9,165 — — 1 14,766 Total debt $ 27,786 $ 10,660 $ (8,365 ) $ (1,967 ) $ 380 $ 28,494 (1) Issuances and borrowings, note redemptions and extinguishments are recorded net of related issuance costs, discounts and premiums. Issuances and borrowings for Short-term debt to affiliates represents net outstanding borrowings on our senior secured revolving credit facility. (2) Other includes: $298 million issuances of short-term debt related to vendor financing arrangements, of which $290 million is related to financing of property and equipment. During the six months ended June 30, 2017 , we repaid $292 million under the vendor financing arrangements. As of June 30, 2017 , vendor financing arrangements totaled $6 million . Vendor financing arrangements are included in Short-term debt within Total current liabilities in our Condensed Consolidated Balance Sheets . Additional activity in Other includes capital leases and the amortization of discounts and premiums. As of June 30, 2017 and December 31, 2016 , capital leases outstanding totaled $1.8 billion and $1.4 billion , respectively. Debt to Third Parties Issuances and Borrowings During the six months ended June 30, 2017 , we issued the following Senior Notes: (in millions) Principal Issuances Issuance Costs Net proceeds from issuance of long-term debt 4.000% Senior Notes due 2022 $ 500 $ 2 $ 498 5.125% Senior Notes due 2025 500 2 498 5.375% Senior Notes due 2027 500 1 499 Total $ 1,500 $ 5 $ 1,495 On March 16, 2017, T-Mobile USA and certain of its affiliates, as guarantors, issued a total of $1.5 billion of public Senior Notes with various interest rates and maturity dates. Issuance costs related to the public debt issuance totaled $5 million for the six months ended June 30, 2017 . We used the net proceeds of $1.495 billion from the transaction to redeem callable high yield debt. Notes Redemptions During the six months ended June 30, 2017 , we made the following note redemptions: (in millions) Principal Amount Write-off of premiums, discounts and issuance costs (1) Call Penalties (1) (2) Redemption Redemption Price 6.625% Senior Notes due 2020 $ 1,000 $ (45 ) $ 22 February 10, 2017 102.208 % 5.250% Senior Notes due 2018 500 1 7 March 4, 2017 101.313 % 6.250% Senior Notes due 2021 1,750 (71 ) 55 April 1, 2017 103.125 % 6.464% Senior Notes due 2019 1,250 — — April 28, 2017 100.000 % 6.542% Senior Notes due 2020 1,250 — 21 April 28, 2017 101.636 % 6.633% Senior Notes due 2021 1,250 — 41 April 28, 2017 103.317 % 6.731% Senior Notes due 2022 1,250 — 42 April 28, 2017 103.366 % Total note redemptions $ 8,250 $ (115 ) $ 188 (1) Write-off of premiums, discounts, issuance costs and call penalties are included in Other expense, net in our Condensed Consolidated Statements of Comprehensive Income . Write-off of premiums, discounts and issuance costs are included in Other, net within Net cash provided by operating activities in our Condensed Consolidated Statements of Cash Flows . (2) The call penalty is the excess paid over the principal amount. Call penalties are included within Net cash provided by operating activities in our Condensed Consolidated Statements of Cash Flows . Debt to Affiliates Issuances and Borrowings During the six months ended June 30, 2017 , we made the following borrowings: (in millions) Net proceeds from issuance of long-term debt Extinguishments Write-off of discounts and issuance costs (1) LIBOR plus 2.00% Senior Secured Term Loan due 2022 $ 2,000 $ — $ — LIBOR plus 2.25% Senior Secured Term Loan due 2024 2,000 — — LIBOR plus 2.750% Senior Secured Term Loan — (1,980 ) 13 Total $ 4,000 $ (1,980 ) $ 13 (1) Write-off of discounts and issuance costs are included in Other expense, net in our Condensed Consolidated Statements of Comprehensive Income and Other, net within Net cash provided by operating activities in our Condensed Consolidated Statements of Cash Flows . On January 25, 2017, T-Mobile USA, Inc. (“T-Mobile USA”), and certain of its affiliates, as guarantors, entered into an agreement to borrow $4.0 billion under a secured term loan facility (“Incremental Term Loan Facility”) with DT, our majority stockholder, to refinance $1.98 billion of outstanding senior secured term loans under its Term Loan Credit Agreement dated November 9, 2015, with the remaining net proceeds from the transaction used to redeem callable high yield debt. The Incremental Term Loan Facility increased DT’s incremental term loan commitment provided to T-Mobile USA under that certain First Incremental Facility Amendment dated as of December 29, 2016, from $660 million to $2.0 billion and provided T-Mobile USA with an additional $2.0 billion incremental term loan commitment. On January 31, 2017, the loans under the Incremental Term Loan Facility were drawn in two tranches: (i) $2.0 billion of which bears interest at a rate equal to a per annum rate of LIBOR plus a margin of 2.00% and matures on November 9, 2022, and (ii) $2.0 billion of which bears interest at a rate equal to a per annum rate of LIBOR plus a margin of 2.25% and matures on January 31, 2024. No issuance fees were incurred related to this debt agreement for the six months ended June 30, 2017 . On March 31, 2017, the Incremental Term Loan Facility was further amended to waive all interim principal payments. The outstanding principal balance will be due at maturity. During the six months ended June 30, 2017 , we issued the following Senior Notes: (in millions) Principal Issuances (Redemptions) Discounts (1) Net proceeds from issuance of long-term debt 4.000% Senior Notes due 2022 $ 1,000 $ (23 ) $ 977 5.125% Senior Notes due 2025 1,250 (28 ) 1,222 5.375% Senior Notes due 2025 750 (28 ) 722 6.288% Senior Reset Notes due 2019 (1,250 ) — (1,250 ) 6.366% Senior Reset Notes due 2020 (1,250 ) — (1,250 ) Total $ 500 $ (79 ) $ 421 (1) Discounts reduce Proceeds from borrowing on revolving credit facility and are included within Net cash (used in) provided by financing activities in our Condensed Consolidated Statements of Cash Flows . On March 13, 2017, DT agreed to purchase a total of $3.5 billion in aggregate principal amounts of Senior Notes with various interest rates and maturity dates (the “new DT Notes”). Through net settlement in April 2017, we issued to DT a total of $3.0 billion in aggregate principal amount of the new DT Notes and redeemed all of the $2.5 billion in outstanding aggregate principal amount of Senior Reset Notes with various interest rates and maturity dates (the “old DT Notes”). The redemption prices of the old DT Notes were 103.144% and 103.183% , resulting in a total of $79 million in early redemption fees. These early redemption fees were recorded as discounts on the issuance of the new DT Notes. The proceeds from the net settlement were $421 million and are included in Proceeds from issuance of long-term debt in our Condensed Consolidated Statements of Cash Flows . The closing of the issuance and sale of the remaining $500 million in aggregate principal amount of the 5.375% Senior Notes due 2027 to DT is expected to occur on or about September 18, 2017 . During the six months ended June 30, 2017 , we also issued the following Senior Notes: (in millions) Principal Issuances Premium Net proceeds from issuance of long-term debt 5.300% Senior Notes due 2021 $ 2,000 $ — $ 2,000 6.000% Senior Notes due 2024 1,350 40 1,390 6.000% Senior Notes due 2024 650 24 674 Total $ 4,000 $ 64 $ 4,064 On May 9, 2017 , we exercised our option under existing purchase agreements and issued Senior Notes to DT. The proceeds were used to fund a portion of the purchase price of spectrum licenses won in the 600 MHz spectrum auction. Net proceeds from these issuances include $64 million in debt premiums. See Note 4 - Spectrum License Transactions for further information. Revolving Credit Facility We had $680 million and $0 million outstanding borrowings under our $1.5 billion senior secured revolving credit facility with DT as of June 30, 2017 , and December 31, 2016 , respectively. Proceeds and borrowings from the revolving credit facility are presented in Proceeds from borrowing on revolving credit facility and Repayments of revolving credit facility within Net cash (used in) provided by financing activities in our Condensed Consolidated Statements of Cash Flows .

Income Taxes (Notes)

Income Taxes (Notes)	6 Months Ended
Income Taxes (Notes)	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 7 – Income Taxes Within our Condensed Consolidated Statements of Comprehensive Income , we recorded an Income tax expense of $353 million and $147 million for the three months ended June 30, 2017 and 2016 , respectively, and $262 million and $419 million for the six months ended June 30, 2017 and 2016 , respectively. The change in each period was primarily from higher income before income taxes offset by a lower effective tax rate. The effective tax rate was 37.8% and 39.5% for the three months ended June 30, 2017 and 2016 , respectively, and 17.0% and 37.3% for the six months ended June 30, 2017 and 2016 , respectively. The change in the effective income tax rate for the six months ended June 30, 2017 , was primarily due to a reduction in the valuation allowance against deferred tax assets in certain state jurisdictions that resulted in the recognition of $270 million in tax benefits in the first quarter of 2017 and the recognition of an additional $11 million in tax benefits in the second quarter of 2017 . Total tax benefits were $281 million through June 30, 2017 . The effective tax rate was further decreased by the recognition of $60 million of excess tax benefits related to share-based payments for the six months ended June 30, 2017 , compared to $21 million for the same period in 2016 . During the first quarter of 2017 , due to ongoing analysis of positive and negative evidence related to the utilization of the deferred tax assets, we determined that a portion of the valuation allowance was no longer necessary. Positive evidence supporting the release of a portion of the valuation allowance included reaching a position of cumulative income over a three-year period in the state jurisdictions as well as projecting sustained earnings in those jurisdictions. Due to this positive evidence, we reduced the valuation allowance which resulted in a decrease to Deferred tax liabilities in our Condensed Consolidated Balance Sheets . We will continue to monitor positive and negative evidence related to the utilization of the remaining deferred tax assets for which a valuation allowance continues to be provided. It is possible that we may release additional portions of the remaining valuation allowance within the next 6 months.

Earnings Per Share

Earnings Per Share	6 Months Ended
Earnings Per Share	Jun. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	Note 8 – Earnings Per Share The computation of basic and diluted earnings per share was as follows: Three Months Ended June 30, Six Months Ended June 30, (in millions, except shares and per share amounts) 2017 2016 2017 2016 Net income $ 581 $ 225 $ 1,279 $ 704 Less: Dividends on mandatory convertible preferred stock (14 ) (14 ) (28 ) (28 ) Net income attributable to common stockholders - basic 567 211 1,251 676 Add: Dividends related to mandatory convertible preferred stock 14 — 28 — Net income attributable to common stockholders - diluted $ 581 $ 211 $ 1,279 $ 676 Weighted average shares outstanding - basic 830,971,528 822,434,490 829,356,255 820,933,126 Effect of dilutive securities: Outstanding stock options and unvested stock awards 7,247,653 7,318,466 9,260,131 8,728,927 Mandatory convertible preferred stock 32,237,266 — 32,237,266 — Weighted average shares outstanding - diluted 870,456,447 829,752,956 870,853,652 829,662,053 Earnings per share - basic $ 0.68 $ 0.26 $ 1.51 $ 0.82 Earnings per share - diluted $ 0.67 $ 0.25 $ 1.47 $ 0.81 Potentially dilutive securities: Outstanding stock options and unvested stock awards 48,397 307,573 71,734 465,765 Mandatory convertible preferred stock — 32,237,266 — 32,237,266 Potentially dilutive securities were not included in the computation of diluted earnings per share if to do so would have been anti-dilutive.

Commitments and Contingencies (

Commitments and Contingencies (Notes)	6 Months Ended
Commitments and Contingencies (Notes)	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 9 – Commitments and Contingencies Commitments Operating Leases and Purchase Commitments Future minimum payments for non-cancelable operating leases and purchase commitments are summarized below: (in millions) Operating Leases Purchase Commitments Year ending June 30, 2018 $ 2,397 $ 2,133 2019 2,132 1,166 2020 1,829 988 2021 1,452 721 2022 1,116 648 Thereafter 2,260 837 Total $ 11,186 $ 6,493 Renewable Energy Purchase Agreement T-Mobile USA has entered into a renewable energy purchase agreement with Red Dirt Wind Project, LLC. The agreement is based on the expected operation of a wind energy-generating facility located in Oklahoma and will remain in effect until the twelfth anniversary of the facility’s entry into commercial operation, which is expected to occur by the end of 2017. The renewable energy purchase agreement consists of two components: (1) an energy forward agreement that is net settled based on energy prices and the energy output generated by the facility and (2) a commitment to purchase the renewable energy credits (“RECs”) associated with the energy output generated by the facility. T-Mobile USA will net settle the forward agreement and acquire the RECs monthly by paying, or receiving, an aggregate net payment based on two variables (1) the facility’s energy output, which has an estimated maximum capacity of approximately 160 megawatts and (2) the difference between (a) an initial fixed price, subject to annual escalation, and (b) current local marginal energy prices during the monthly settlement period. We have determined that the renewable energy purchase agreement does not meet the definition of a derivative because the expected energy output of the facility may not be reliably estimated (the arrangement lacks a notional amount). The renewable energy purchase agreement does not contain any unconditional purchase obligations because amounts under the agreement are not fixed and determinable. Our participation in the renewable energy purchase agreement did not require an upfront investment or capital commitment. We do not control the activities that most significantly impact the energy-generating facility nor do we receive specific energy output from it. No amounts were settled under the agreement during the six months ended June 30, 2017 . Related-Party Commitments During the six months ended June 30, 2017 , we entered into certain debt related transactions with affiliates. See Note 6 - Debt for further information. Contingencies and Litigation We are involved in various lawsuits, claims, government agency investigations and enforcement actions, and other proceedings (“Litigation Matters”) that arise in the ordinary course of business, which include numerous court actions alleging that we are infringing various patents. Virtually all of the patent infringement cases are brought by non-practicing entities and effectively seek only monetary damages, although they occasionally seek injunctive relief as well. The Litigation Matters described above have progressed to various stages and some of them may proceed to trial, arbitration, hearing or other adjudication that could include an award of monetary or injunctive relief in the coming 12 months, if they are not otherwise resolved. We have established an accrual with respect to certain of these matters, where appropriate, which is reflected in the condensed consolidated financial statements but that we do not consider, individually or in the aggregate, material. An accrual is established when we believe it is both probable that a loss has been incurred and an amount can be reasonably estimated. For other matters, where we have not determined that a loss is probable or because the amount of loss cannot be reasonably estimated, we have not recorded an accrual due to various factors typical in contested proceedings, including but not limited to: uncertainty concerning legal theories and their resolution by courts or regulators; uncertain damage theories and demands; and a less than fully developed factual record. While we do not expect that the ultimate resolution of these proceedings, individually or in the aggregate will have a material adverse effect on our financial position, an unfavorable outcome of some or all of these proceedings could have a material adverse impact on results of operations or cash flows for a particular period. This assessment is based on our current understanding of relevant facts and circumstances. As such, our view of these matters is subject to inherent uncertainties and may change in the future.

Guarantor Financial Information

Guarantor Financial Information (Notes)	6 Months Ended
Guarantor Financial Information (Notes)	Jun. 30, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Guarantor Financial Information	Note 10 – Guarantor Financial Information Pursuant to the applicable indentures and supplemental indentures, the long-term debt to affiliates and third parties, excluding Senior Secured Term Loans and capital leases, issued by T-Mobile USA (“Issuer”) is fully and unconditionally guaranteed, jointly and severally, on a senior unsecured basis by T-Mobile (“Parent”) and certain of the Issuer’s 100% owned subsidiaries (“Guarantor Subsidiaries”). In January 2017, T-Mobile USA, and certain of its affiliates, as guarantors, borrowed $4.0 billion under the Incremental Term Loan Facility to refinance $1.98 billion of outstanding secured term loans under its Term Loan Credit Agreement dated November 9, 2015, with the remaining net proceeds from the transaction intended to be used to redeem callable high yield debt. In March 2017, T-Mobile USA and certain of its affiliates, as guarantors, (i) issued $500 million in aggregate principal amount of public 4.000% Senior Notes due 2022 , (ii) issued $500 million in aggregate principal amount of public 5.125% Senior Notes due 2025 and (iii) issued $500 million in aggregate principal amount of public 5.375% Senior Notes due 2027 . In April 2017, T-Mobile USA and certain of its affiliates, as guarantors, (i) issued $1.0 billion in aggregate principal amount of 4.000% Senior Notes due 2022, (ii) issued $1.25 billion in aggregate principal amount of 5.125% Senior Notes due 2025 and (iii) issued $750 million in aggregate principal amount of 5.375% Senior Notes due 2027. Additionally, T-Mobile USA and certain of its affiliates, as guarantors, redeemed through net settlement, all of the $1.25 billion outstanding aggregate principal amount of the 6.288% Senior Reset Notes to affiliates due 2019 and $1.25 billion in aggregate principal amount of the 6.366% Senior Reset Notes to affiliates due 2020. In May 2017, T-Mobile USA and certain of its affiliates, as guarantors, (i) issued $2.0 billion in aggregate principal amount of 5.300% Senior Notes due 2021, (ii) issued $1.35 billion in aggregate principal amount of 6.000% Senior Notes due 2024 and (iii) issued $650 million in aggregate principal amount of 6.000% Senior Notes due 2024. See Note 6 - Debt for further information. The guarantees of the Guarantor Subsidiaries are subject to release in limited circumstances only upon the occurrence of certain customary conditions. The indentures and credit facilities governing the long-term debt contain covenants that, among other things, limit the ability of the Issuer and the Guarantor Subsidiaries to: incur more debt; pay dividends and make distributions; make certain investments; repurchase stock; create liens or other encumbrances; enter into transactions with affiliates; enter into transactions that restrict dividends or distributions from subsidiaries; and merge, consolidate, or sell, or otherwise dispose of, substantially all of their assets. Certain provisions of each of the credit facilities, indentures and supplemental indentures relating to the long-term debt restrict the ability of the Issuer to loan funds or make payments to Parent. However, the Issuer and Guarantor Subsidiaries are allowed to make certain permitted payments to the Parent under the terms of the indentures and the supplemental indentures. Presented below is the condensed consolidating financial information as of June 30, 2017 and December 31, 2016 , and for the three and six months ended June 30, 2017 and 2016 . Condensed Consolidating Balance Sheet Information June 30, 2017 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Assets Current assets Cash and cash equivalents $ 43 $ 1 $ 121 $ 16 $ — $ 181 Accounts receivable, net — — 1,485 234 — 1,719 Equipment installment plan receivables, net — — 2,060 — — 2,060 Accounts receivable from affiliates — — 32 — — 32 Inventories — — 1,208 — — 1,208 Other current assets — — 1,010 570 — 1,580 Total current assets 43 1 5,916 820 — 6,780 Property and equipment, net (1) — — 21,083 340 — 21,423 Goodwill — — 1,683 — — 1,683 Spectrum licenses — — 35,060 — — 35,060 Other intangible assets, net — — 296 — — 296 Investments in subsidiaries, net 19,272 37,056 — — (56,328 ) — Intercompany receivables 299 9,367 — — (9,666 ) — Equipment installment plan receivables due after one year, net — — 1,102 — — 1,102 Other assets — 3 507 305 — 815 Total assets $ 19,614 $ 46,427 $ 65,647 $ 1,465 $ (65,994 ) $ 67,159 Liabilities and Stockholders' Equity Current liabilities Accounts payable and accrued liabilities $ — $ 261 $ 5,705 $ 259 $ — $ 6,225 Payables to affiliates — 119 36 — — 155 Short-term debt — 5 517 — — 522 Short-term debt to affiliates — 680 — — — 680 Deferred revenue — — 851 — — 851 Other current liabilities — — 230 165 — 395 Total current liabilities — 1,065 7,339 424 — 8,828 Long-term debt — 11,915 1,291 — — 13,206 Long-term debt to affiliates — 14,086 — — — 14,086 Tower obligations (1) — — 396 2,210 — 2,606 Deferred tax liabilities — — 5,188 — — 5,188 Deferred rent expense — — 2,660 — — 2,660 Negative carrying value of subsidiaries, net — — 567 — (567 ) — Intercompany payables — — 9,445 221 (9,666 ) — Other long-term liabilities — 89 878 4 — 971 Total long-term liabilities — 26,090 20,425 2,435 (10,233 ) 38,717 Total stockholders' equity (deficit) 19,614 19,272 37,883 (1,394 ) (55,761 ) 19,614 Total liabilities and stockholders' equity $ 19,614 $ 46,427 $ 65,647 $ 1,465 $ (65,994 ) $ 67,159 (1) Assets and liabilities for Non-Guarantor Subsidiaries are primarily included in VIEs related to the 2012 Tower Transaction. See Note 8 – Tower Obligations included in the Annual Report on Form 10-K for the year ended December 31, 2016. Condensed Consolidating Balance Sheet Information December 31, 2016 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Assets Current assets Cash and cash equivalents $ 358 $ 2,733 $ 2,342 $ 67 $ — $ 5,500 Accounts receivable, net — — 1,675 221 — 1,896 Equipment installment plan receivables, net — — 1,930 — — 1,930 Accounts receivable from affiliates — — 40 — — 40 Inventories — — 1,111 — — 1,111 Asset purchase deposit — — 2,203 — — 2,203 Other current assets — — 972 565 — 1,537 Total current assets 358 2,733 10,273 853 — 14,217 Property and equipment, net (1) — — 20,568 375 — 20,943 Goodwill — — 1,683 — — 1,683 Spectrum licenses — — 27,014 — — 27,014 Other intangible assets, net — — 376 — — 376 Investments in subsidiaries, net 17,682 35,095 — — (52,777 ) — Intercompany receivables 196 6,826 — — (7,022 ) — Equipment installment plan receivables due after one year, net — — 984 — — 984 Other assets — 7 600 262 (195 ) 674 Total assets $ 18,236 $ 44,661 $ 61,498 $ 1,490 $ (59,994 ) $ 65,891 Liabilities and Stockholders' Equity Current liabilities Accounts payable and accrued liabilities $ — $ 423 $ 6,474 $ 255 $ — $ 7,152 Payables to affiliates — 79 46 — — 125 Short-term debt — 20 334 — — 354 Deferred revenue — — 986 — — 986 Other current liabilities — — 258 147 — 405 Total current liabilities — 522 8,098 402 — 9,022 Long-term debt — 20,741 1,091 — — 21,832 Long-term debt to affiliates — 5,600 — — — 5,600 Tower obligations (1) — — 400 2,221 — 2,621 Deferred tax liabilities — — 5,133 — (195 ) 4,938 Deferred rent expense — — 2,616 — — 2,616 Negative carrying value of subsidiaries, net — — 568 — (568 ) — Intercompany payables — — 6,785 237 (7,022 ) — Other long-term liabilities — 116 906 4 — 1,026 Total long-term liabilities — 26,457 17,499 2,462 (7,785 ) 38,633 Total stockholders' equity (deficit) 18,236 17,682 35,901 (1,374 ) (52,209 ) 18,236 Total liabilities and stockholders' equity $ 18,236 $ 44,661 $ 61,498 $ 1,490 $ (59,994 ) $ 65,891 (1) Assets and liabilities for Non-Guarantor Subsidiaries are primarily included in VIEs related to the 2012 Tower Transaction. See Note 8 – Tower Obligations included in the Annual Report on Form 10-K for the year ended December 31, 2016. Condensed Consolidating Statement of Comprehensive Income Information Three Months Ended June 30, 2017 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Revenues Service revenues $ — $ — $ 7,127 $ 528 $ (210 ) $ 7,445 Equipment revenues — — 2,575 — (69 ) 2,506 Other revenues — — 216 51 (5 ) 262 Total revenues — — 9,918 579 (284 ) 10,213 Operating expenses Cost of services, exclusive of depreciation and amortization shown separately below — — 1,512 6 — 1,518 Cost of equipment sales — — 2,664 251 (69 ) 2,846 Selling, general and administrative — — 2,933 197 (215 ) 2,915 Depreciation and amortization — — 1,501 18 — 1,519 Gains on disposal of spectrum licenses — — (1 ) — — (1 ) Total operating expense — — 8,609 472 (284 ) 8,797 Operating income — — 1,309 107 — 1,416 Other income (expense) Interest expense — (194 ) (23 ) (48 ) — (265 ) Interest expense to affiliates — (132 ) (5 ) — 6 (131 ) Interest income — 8 4 — (6 ) 6 Other expense, net — (91 ) (1 ) — — (92 ) Total other expense, net — (409 ) (25 ) (48 ) — (482 ) Income (loss) before income taxes — (409 ) 1,284 59 — 934 Income tax expense — — (333 ) (20 ) — (353 ) Earnings of subsidiaries 581 990 14 — (1,585 ) — Net income 581 581 965 39 (1,585 ) 581 Dividends on preferred stock (14 ) — — — — (14 ) Net income attributable to common stockholders $ 567 $ 581 $ 965 $ 39 $ (1,585 ) $ 567 Net Income $ 581 $ 581 $ 965 $ 39 $ (1,585 ) $ 581 Other comprehensive income (loss), net of tax Other comprehensive income (loss), net of tax 1 1 1 (1 ) (1 ) 1 Total comprehensive income $ 582 $ 582 $ 966 $ 38 $ (1,586 ) $ 582 Condensed Consolidating Statement of Comprehensive Income Information Three Months Ended June 30, 2016 (in millions) Parent Issuer Guarantor Subsidiaries (As adjusted - See Note 1) Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated (As adjusted - See Note 1) Revenues Service revenues $ — $ — $ 6,574 $ 517 $ (203 ) $ 6,888 Equipment revenues — — 2,298 — (110 ) 2,188 Other revenues — — 167 (1) 49 (5 ) 211 Total revenues — — 9,039 (1) 566 (318 ) 9,287 Operating expenses Cost of services, exclusive of depreciation and amortization shown separately below — — 1,423 6 — 1,429 Cost of equipment sales — — 2,477 251 (109 ) 2,619 Selling, general and administrative — — 2,764 217 (209 ) 2,772 Depreciation and amortization — — 1,555 20 — 1,575 Cost of MetroPCS business combination — — 59 — — 59 Total operating expense — — 8,278 494 (318 ) 8,454 Operating income — — 761 (1) 72 — 833 Other income (expense) Interest expense — (304 ) (18 ) (46 ) — (368 ) Interest expense to affiliates — (93 ) — — — (93 ) Interest income — 8 (5 ) (1) — — 3 Other expense, net — — (3 ) — — (3 ) Total other expense, net — (389 ) (26 ) (1) (46 ) — (461 ) Income (loss) before income taxes — (389 ) 735 26 — 372 Income tax expense — — (138 ) (9 ) — (147 ) Earnings (loss) of subsidiaries 225 614 (1 ) — (838 ) — Net income 225 225 596 17 (838 ) 225 Dividends on preferred stock (14 ) — — — — (14 ) Net income attributable to common stockholders $ 211 $ 225 $ 596 $ 17 $ (838 ) $ 211 Net Income $ 225 $ 225 $ 596 $ 17 $ (838 ) $ 225 Other comprehensive income, net of tax Other comprehensive income, net of tax 3 3 3 — (6 ) 3 Total comprehensive income $ 228 $ 228 $ 599 $ 17 $ (844 ) $ 228 (1) The amortized imputed discount on EIP receivables previously recognized as Interest income has been retrospectively reclassified as Other revenues. See Note 1 - Basis of Presentation for further detail. Condensed Consolidating Statement of Comprehensive Income Information Six Months Ended June 30, 2017 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Revenues Service revenues $ — $ — $ 14,145 $ 1,053 $ (424 ) $ 14,774 Equipment revenues — — 4,718 — (169 ) 4,549 Other revenues — — 410 103 (10 ) 503 Total revenues — — 19,273 1,156 (603 ) 19,826 Operating expenses Cost of services, exclusive of depreciation and amortization shown separately below — — 2,914 12 — 2,926 Cost of equipment sales — — 5,204 497 (169 ) 5,532 Selling, general and administrative — — 5,861 443 (434 ) 5,870 Depreciation and amortization — — 3,047 36 — 3,083 Cost of MetroPCS business combination — — — — — — Gains on disposal of spectrum licenses — — (38 ) — — (38 ) Total operating expenses — — 16,988 988 (603 ) 17,373 Operating income — — 2,285 168 — 2,453 Other income (expense) Interest expense — (458 ) (50 ) (96 ) — (604 ) Interest expense to affiliates — (231 ) (12 ) — 12 (231 ) Interest income — 17 8 — (12 ) 13 Other expense, net — (88 ) (2 ) — — (90 ) Total other expense, net — (760 ) (56 ) (96 ) — (912 ) Income (loss) before income taxes — (760 ) 2,229 72 — 1,541 Income tax expense — — (237 ) (25 ) — (262 ) Earnings (loss) of subsidiaries 1,279 2,039 (17 ) — (3,301 ) — Net income 1,279 1,279 1,975 47 (3,301 ) 1,279 Dividends on preferred stock (28 ) — — — — (28 ) Net income attributable to common stockholders $ 1,251 $ 1,279 $ 1,975 $ 47 $ (3,301 ) $ 1,251 Net Income $ 1,279 $ 1,279 $ 1,975 $ 47 $ (3,301 ) $ 1,279 Other comprehensive income, net of tax Other comprehensive income, net of tax 2 2 2 — (4 ) 2 Total comprehensive income $ 1,281 $ 1,281 $ 1,977 $ 47 $ (3,305 ) $ 1,281 Condensed Consolidating Statement of Comprehensive Income Information Six Months Ended June 30, 2016 (in millions) Parent Issuer Guarantor Subsidiaries (As adjusted - See Note 1) Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated (As adjusted - See Note 1) Revenues Service revenues $ — $ — $ 12,861 $ 980 $ (375 ) $ 13,466 Equipment revenues — — 4,279 — (240 ) 4,039 Other revenues — — 358 (1) 97 (9 ) 446 Total revenues — — 17,498 (1) 1,077 (624 ) 17,951 Operating expenses Cost of services, exclusive of depreciation and amortization shown separately below — — 2,838 12 — 2,850 Cost of equipment sales — — 4,764 468 (239 ) 4,993 Selling, general and administrative — — 5,488 418 (385 ) 5,521 Depreciation and amortization — — 3,087 40 — 3,127 Cost of MetroPCS business combination — — 95 — — 95 Gains on disposal of spectrum licenses — — (636 ) — — (636 ) Total operating expenses — — 15,636 938 (624 ) 15,950 Operating income — — 1,862 (1) 139 — 2,001 Other income (expense) Interest expense — (578 ) (35 ) (94 ) — (707 ) Interest expense to affiliates — (172 ) — — — (172 ) Interest income — 16 (10 ) (1) — — 6 Other expense, net — — (5 ) — — (5 ) Total other expense, net — (734 ) (50 ) (1) (94 ) — (878 ) Income (loss) before income taxes — (734 ) 1,812 45 — 1,123 Income tax expense — — (401 ) (18 ) — (419 ) Earnings (loss) of subsidiaries 704 1,438 (11 ) — (2,131 ) — Net income 704 704 1,400 27 (2,131 ) 704 Dividends on preferred stock (28 ) — — — — (28 ) Net income attributable to common stockholders $ 676 $ 704 $ 1,400 $ 27 $ (2,131 ) $ 676 Net income $ 704 $ 704 $ 1,400 $ 27 $ (2,131 ) $ 704 Other comprehensive income, net of tax Other comprehensive income, net of tax — — — — — — Total comprehensive income $ 704 $ 704 $ 1,400 $ 27 $ (2,131 ) $ 704 (1) The amortized imputed discount on EIP receivables previously recognized as Interest income has been retrospectively reclassified as Other revenues. See Note 1 - Basis of Presentation for further detail. Condensed Consolidating Statement of Cash Flows Information Three Months Ended June 30, 2017 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Operating activities Net cash provided by (used in) operating activities $ 1 $ (9,785 ) $ 11,663 $ 30 $ (80 ) $ 1,829 Investing activities Purchases of property and equipment — — (1,347 ) — — (1,347 ) Purchases of spectrum licenses and other intangible assets, including deposits — — (5,791 ) — — (5,791 ) Equity investment in subsidiary (308 ) — — — 308 — Other, net — — 5 — — 5 Net cash used in investing activities (308 ) — (7,133 ) — 308 (7,133 ) Financing activities Proceeds from issuance of long-term debt — 4,485 — — — 4,485 Proceeds from borrowing on revolving credit facility, net — 1,855 — — — 1,855 Repayments of revolving credit facility — — (1,175 ) — — (1,175 ) Repayments of capital lease obligations — — (119 ) — — (119 ) Repayments of short-term debt for purchases of inventory, property and equipment, net — — (292 ) — — (292 ) Repayments of long-term debt — — (6,750 ) — — (6,750 ) Equity investment from parent — 308 — — (308 ) — Tax withholdings on share-based awards — — (3 ) — — (3 ) Intercompany dividend paid — — — (80 ) 80 — Dividends on preferred stock (14 ) — — — — (14 ) Other, net 4 — (7 ) — — (3 ) Net cash (used in) provided by financing activities (10 ) 6,648 (8,346 ) (80 ) (228 ) (2,016 ) Change in cash and cash equivalents (317 ) (3,137 ) (3,816 ) (50 ) — (7,320 ) Cash and cash equivalents Beginning of period 360 3,138 3,937 66 — 7,501 End of period $ 43 $ 1 $ 121 $ 16 $ — $ 181 Condensed Consolidating Statement of Cash Flows Information Three Months Ended June 30, 2016 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Operating activities Net cash provided by (used in) operating activities $ 3 $ (1,783 ) $ 3,612 $ 11 $ (75 ) $ 1,768 Investing activities Purchases of property and equipment — — (1,349 ) — — (1,349 ) Purchases of spectrum licenses and other intangible assets, including deposits — — (2,245 ) — — (2,245 ) Sales of short-term investments — 2,000 923 — — 2,923 Other, net — — 4 — — 4 Net cash provided by (used in) investing activities — 2,000 (2,667 ) — — (667 ) Financing activities Proceeds from issuance of long-term debt — 997 — — — 997 Repayments of capital lease obligations — — (43 ) — — (43 ) Repayments of short-term debt for purchases of inventory, property and equipment, net — — (150 ) — — (150 ) Repayments of long-term debt — — (5 ) — — (5 ) Tax withholdings on share-based awards — — (3 ) — — (3 ) Intercompany dividend paid — — — (75 ) 75 — Dividends on preferred stock (14 ) — — — — (14 ) Other, net 13 — (5 ) — — 8 Net cash (used in) provided by financing activities (1 ) 997 (206 ) (75 ) 75 790 Change in cash and cash equivalents 2 1,214 739 (64 ) — 1,891 Cash and cash equivalents Beginning of period 365 1,469 1,700 113 — 3,647 End of period $ 367 $ 2,683 $ 2,439 $ 49 $ — $ 5,538 Condensed Consolidating Statement of Cash Flows Information Six Months Ended June 30, 2017 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Operating activities Net cash provided by (used in) operating activities $ 2 $ (14,875 ) $ 18,466 $ 29 $ (80 ) $ 3,542 Investing activities Purchases of property and equipment — — (2,875 ) — — (2,875 ) Purchases of spectrum licenses and other intangible assets, including deposits — — (5,805 ) — — (5,805 ) Equity investment in subsidiary (308 ) — — — 308 — Other, net — — (3 ) — — (3 ) Net cash used in investing activities (308 ) — (8,683 ) — 308 (8,683 ) Financing activities Proceeds from issuance of long-term debt — 9,980 — — — 9,980 Proceeds from borrowing on revolving credit facility, net — 1,855 — — — 1,855 Repayments of revolving credit facility — — (1,175 ) — — (1,175 ) Repayments of capital lease obligations — — (209 ) — — (209 ) Repayments of short-term debt for purchases of inventory, property and equipment, net — — (292 ) — — (292 ) Repayments of long-term debt — — (10,230 ) — — (10,230 ) Equity investment from parent — 308 — — (308 ) — Tax withholdings on share-based awards — — (95 ) — — (95 ) Intercompany dividend paid — — — (80 ) 80 — Dividends on preferred stock (28 ) — — — — (28 ) Other, net 19 — (3 ) — — 16 Net cash (used in) provided by financing activities (9 ) 12,143 (12,004 ) (80 ) (228 ) (178 ) Change in cash and cash equivalents (315 ) (2,732 ) (2,221 ) (51 ) — (5,319 ) Cash and cash equivalents Beginning of period 358 2,733 2,342 67 — 5,500 End of period $ 43 $ 1 $ 121 $ 16 $ — $ 181 Condensed Consolidating Statement of Cash Flows Information Six Months Ended June 30, 2016 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Operating activities Net cash provided by (used in) operating activities $ 3 $ (2,081 ) $ 4,895 $ 51 $ (75 ) $ 2,793 Investing activities Purchases of property and equipment — — (2,684 ) — — (2,684 ) Purchases of spectrum licenses and other intangible assets, including deposits — — (2,839 ) — — (2,839 ) Sales of short-term investments — 2,000 998 — — 2,998 Other, net — — (2 ) — — (2 ) Net cash provided by (used in) investing activities — 2,000 (4,527 ) — — (2,527 ) Financing activities Proceeds from issuance of long-term debt — 997 — — — 997 Repayments of capital lease obligations — — (79 ) — — (79 ) Repayments of short-term debt for purchases of inventory, property and equipment, net — — (150 ) — — (150 ) Repayments of long-term debt — — (10 ) — — (10 ) Tax withholdings on share-based awards — — (49 ) — — (49 ) Intercompany dividend paid — — — (75 ) 75 — Dividends on preferred stock (28 ) — — — — (28 ) Other, net 14 — (5 ) — — 9 Net cash (used in) provided by financing activities (14 ) 997 (293 ) (75 ) 75 690 Change in cash and cash equivalents (11 ) 916 75 (24 ) — 956 Cash and cash equivalents Beginning of period 378 1,767 2,364 73 — 4,582 End of period $ 367 $ 2,683 $ 2,439 $ 49 $ — $ 5,538

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
Basis of Presentation (Policies)	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The unaudited condensed consolidated financial statements of T-Mobile US, Inc. (“T-Mobile,” “we,” “our,” “us” or the “Company”) include all adjustments of a normal recurring nature necessary for the fair presentation of the results for the interim periods presented. The results for the interim periods are not necessarily indicative of those for the full year. The condensed consolidated financial statements should be read in conjunction with our consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2016 . The condensed consolidated financial statements include the balances and results of operations of T-Mobile and our consolidated subsidiaries. We consolidate majority-owned subsidiaries over which we exercise control, as well as variable interest entities (“VIE”) where we are deemed to be the primary beneficiary and VIEs which cannot be deconsolidated, such as those related to Tower obligations (Tower obligations are included in VIEs related to the 2012 Tower Transaction. See Note 8 - Tower Obligations included in the Annual Report on Form 10-K for the year ended December 31, 2016 ). Intercompany transactions and balances have been eliminated in consolidation.
Basis of Accounting	The preparation of financial statements in conformity with United States (“U.S.”) generally accepted accounting principles (“GAAP”) requires our management to make estimates and assumptions which affect the financial statements and accompanying notes.
Use of Estimates	Estimates are based on historical experience, where applicable, and other assumptions which our management believes are reasonable under the circumstances. These estimates are inherently subject to judgment and actual results could differ from those estimates.
Accounting Pronouncements Not Yet Adopted	Accounting Pronouncements Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”), and has since modified the standard with several ASU’s. The standard is effective for us, and we will adopt the standard, on January 1, 2018. The standard requires entities to recognize revenue through the application of a five-step model, which includes: identification of the contract; identification of the performance obligations; determination of the transaction price; allocation of the transaction price to the performance obligations; and recognition of revenue as the entity satisfies the performance obligations. The guidance permits two methods of adoption, the full retrospective method applying the standard to each prior reporting period presented, or the modified retrospective method with a cumulative effect of initially applying the guidance recognized at the date of initial application. The standard also allows entities to apply certain practical expedients at their discretion. We are adopting the standard using the modified retrospective method with a cumulative catch up adjustment and will provide additional disclosures comparing results to previous rules. We continue to evaluate the impact of the new standard but anticipate this standard will have a material impact on our consolidated financial statements. While we are continuing to assess all potential impacts of the standard, we currently believe the most significant impacts may include the following items: • Whether our EIP contracts contain a significant financing component, which is similar to our current practice of imputing interest, and would similarly impact the amount of revenue recognized at the time of an EIP sale and whether or not a portion of the revenue is recognized as interest and included in other revenues, rather than equipment revenues. • As we currently expense contract acquisition costs, we believe that the requirement to defer incremental contract acquisition costs and recognize them over the term of the initial contract and anticipated renewal contracts to which the costs relate will have a significant impact to our consolidated financial statements. We plan to utilize the practical expedient permitting expensing of costs to obtain a contract when the expected amortization period is one year or less. • Whether bill credits earned over time result in extended service contracts, which would impact the allocation and timing of revenue recognition between service revenue and equipment revenue. • Overall, with the exception of the aforementioned impacts, we do not expect that the new standard will result in a substantive change to the method of allocation of contract revenues between various services and equipment, nor to the timing of when revenues are recognized for most of our service contracts. We are still in the process of evaluating these impacts, and our initial assessment may change due to changes in the terms and mix of the contractual arrangements we have with customers. New products or offerings, or changes to current offerings may yield significantly different impacts than currently expected. We are in the process of implementing significant new revenue accounting systems, processes and internal controls over revenue recognition which will ultimately assist us in the application of the new standard. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” The standard requires all lessees to report a right-of-use asset and a lease liability for most leases. The income statement recognition is similar to existing lease accounting and is based on lease classification. The standard requires lessees and lessors to classify most leases using principles similar to existing lease accounting, but eliminates the “bright line” classification tests. For lessors, the standard modifies the classification criteria and the accounting for sales-type and direct financing leases. We are currently evaluating the standard, which will require recognizing and measuring leases at the beginning of the earliest period presented using a modified retrospective approach. We plan to adopt the standard when it becomes effective for us beginning January 1, 2019 and expect the adoption of the standard will result in the recognition of right to use assets and liabilities that have not previously been recorded, which will have a material impact on our condensed consolidated financial statements . In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” The standard requires a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions and reasonable and supportable forecasts that affect the collectibility of the reported amount. The standard will become effective for us beginning January 1, 2020, and will require a cumulative-effect adjustment to Accumulated deficit as of the beginning of the first reporting period in which the guidance is effective (that is, a modified-retrospective approach). Early adoption is permitted for us as of January 1, 2019. We are currently evaluating the impact this guidance will have on our condensed consolidated financial statements and the timing of adoption. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments.” The standard is intended to reduce current diversity in practice and provides guidance on how certain cash receipts and payments are presented and classified in the statement of cash flows. The standard will become effective for us beginning January 1, 2018, and will require a retrospective approach. Early adoption is permitted, including adoption in an interim period. We are currently evaluating the timing of adoption. The standard will impact the presentation of cash flows related to beneficial interests in securitization, which is the deferred purchase price, resulting in a reclassification of cash inflows from Operating activities to Investing activities of approximately $800 million and $900 million for the three months ended June 30, 2017 and 2016 , respectively, and $1.8 billion for both the six months ended June 30, 2017 and 2016 in our condensed consolidated statement of cash flows. The standard will also impact the presentation of cash payments for debt prepayment or debt extinguishment costs, resulting in a reclassification of cash outflows from Operating activities to Financing activities of $159 million and $188 million for the three and six months ended June 30, 2017, respectively, in our condensed consolidated statement of cash flows. In October 2016, the FASB issued ASU 2016-16, “Accounting for Income Taxes: Intra-Entity Transfers of Assets Other Than Inventory.” The standard requires that the income tax impact of intra-entity sales and transfers of property, except for inventory, be recognized when the transfer occurs. The standard will become effective for us beginning January 1, 2018, and will require any deferred taxes not yet recognized on intra-entity transfers to be recorded to retained earnings under a modified retrospective approach. Early adoption is permitted. We are currently evaluating the standard, but expect that it will not have a material impact on our condensed consolidated financial statements. In November 2016, the FASB issued ASU 2016-18, “Statement of Cash Flows (Topic 230): Restricted Cash.” The standard requires entities to include in their cash and cash-equivalent balances in the statement of cash flows those amounts that are deemed to be restricted cash and restricted cash equivalents. The ASU does not define the terms “restricted cash” and “restricted cash equivalents.” The standard will be effective for us beginning January 1, 2018, and will require a retrospective approach. Early adoption is permitted. We are currently evaluating the standard, but expect that it will not have a material impact on our condensed consolidated financial statements. In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” The standard eliminates the requirement to measure the implied fair value of goodwill by assigning the fair value of a reporting unit to all assets and liabilities within that unit (“the Step 2 test”) from the goodwill impairment test. Instead, if the carrying amount of a reporting unit exceeds its fair value, an impairment loss is recognized in an amount equal to that excess, limited by the amount of goodwill in that reporting unit. The standard will become effective for us beginning January 1, 2020, and must be applied to any annual or interim goodwill impairment assessments after that date. Early adoption is permitted. We are currently evaluating the standard and timing of adoption, but expect that it will not have a material impact on our condensed consolidated financial statements.

Basis of Presentation (Tables)

Basis of Presentation (Tables)	6 Months Ended
Basis of Presentation (Tables)	Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	We have applied this change retrospectively and presented the effect on the three and six months ended June 30, 2017 and 2016 , in the tables below: Three Months Ended June 30, 2017 Three Months Ended June 30, 2016 (in millions) Unadjusted Change in Accounting Principle As Adjusted As Filed Change in Accounting Principle As Adjusted Other revenues $ 194 $ 68 $ 262 $ 146 $ 65 $ 211 Total revenues 10,145 68 10,213 9,222 65 9,287 Operating income 1,348 68 1,416 768 65 833 Interest income 74 (68 ) 6 68 (65 ) 3 Total other expense, net (414 ) (68 ) (482 ) (396 ) (65 ) (461 ) Net income 581 — 581 225 — 225 Six Months Ended June 30, 2017 Six Months Ended June 30, 2016 (in millions) Unadjusted Change in Accounting Principle As Adjusted As Filed Change in Accounting Principle As Adjusted Other revenues $ 373 $ 130 $ 503 $ 316 $ 130 $ 446 Total revenues 19,696 130 19,826 17,821 130 17,951 Operating income 2,323 130 2,453 1,871 130 2,001 Interest income 143 (130 ) 13 136 (130 ) 6 Total other expense, net (782 ) (130 ) (912 ) (748 ) (130 ) (878 ) Net income 1,279 — 1,279 704 — 704

Equipment Installment Plan Re20

Equipment Installment Plan Receivables (Tables)	6 Months Ended
Equipment Installment Plan Receivables (Tables)	Jun. 30, 2017
Receivables [Abstract]
Schedule of Equipment Installment Plan Receivables	The following table summarizes the EIP receivables: (in millions) June 30, December 31, EIP receivables, gross $ 3,496 $ 3,230 Unamortized imputed discount (231 ) (195 ) EIP receivables, net of unamortized imputed discount 3,265 3,035 Allowance for credit losses (103 ) (121 ) EIP receivables, net $ 3,162 $ 2,914 Classified on the balance sheet as: Equipment installment plan receivables, net $ 2,060 $ 1,930 Equipment installment plan receivables due after one year, net 1,102 984 EIP receivables, net $ 3,162 $ 2,914
Schedule of Equipment Installment Plan Receivables by Credit Category	The balance and aging of the EIP receivables on a gross basis by credit category were as follows: June 30, 2017 December 31, 2016 (in millions) Prime Subprime Total Prime Subprime Total Unbilled $ 1,416 $ 1,871 $ 3,287 $ 1,343 $ 1,686 $ 3,029 Billed – Current 57 83 140 51 77 128 Billed – Past Due 24 45 69 25 48 73 EIP receivables, gross $ 1,497 $ 1,999 $ 3,496 $ 1,419 $ 1,811 $ 3,230
Schedule of Unamortized Imputed Discount and Allowance for Credit Losses for Equipment Installment Plan Receivables	Activity for the six months ended June 30, 2017 and 2016 , in the unamortized imputed discount and allowance for credit losses balances for the EIP receivables was as follows: (in millions) June 30, June 30, Imputed discount and allowance for credit losses, beginning of period $ 316 $ 333 Bad debt expense 119 126 Write-offs, net of recoveries (137 ) (137 ) Change in imputed discount on short-term and long-term EIP receivables 121 83 Impacts from sales of EIP receivables (85 ) (91 ) Imputed discount and allowance for credit losses, end of period $ 334 $ 314

Sales of Certain Receivables (T

Sales of Certain Receivables (Tables)	6 Months Ended
Sales of Certain Receivables (Tables)	Jun. 30, 2017
Transfers and Servicing [Abstract]
Schedule of Variable Interest Entities	The following table summarizes the carrying amounts and classification of assets, which consists primarily of the deferred purchase price and liabilities included in our Condensed Consolidated Balance Sheets that relate to our variable interest in the Service VIE: (in millions) June 30, December 31, Other current assets $ 223 $ 207 Accounts payable and accrued liabilities — 17 Other current liabilities 145 129
Schedule of variable interest entities - EIP	The following table summarizes the carrying amounts and classification of assets, which consists primarily of the deferred purchase price and liabilities included in our Condensed Consolidated Balance Sheets that relate to the EIP BRE: (in millions) June 30, December 31, Other current assets $ 349 $ 371 Other assets 106 83 Other long-term liabilities 3 4
Schedule of Factoring Arrangement	The following table summarizes the impacts of the sale of certain service receivables and EIP receivables in our Condensed Consolidated Balance Sheets : (in millions) June 30, December 31, Derecognized net service receivables and EIP receivables $ 2,422 $ 2,502 Other current assets 572 578 of which, deferred purchase price 570 576 Other long-term assets 106 83 of which, deferred purchase price 106 83 Accounts payable and accrued liabilities — 17 Other current liabilities 145 129 Other long-term liabilities 3 4 Net cash proceeds since inception 1,952 2,030 Of which: Change in net cash proceeds during the year-to-date period (78 ) 536 Net cash proceeds funded by reinvested collections 2,030 1,494

Spectrum License Transactions22

Spectrum License Transactions (Tables)	6 Months Ended
Spectrum License Transactions (Tables)	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Spectrum Licenses	The following table summarizes our spectrum license activity during the first half of 2017 : (in millions) Spectrum Licenses Balance at December 31, 2016 $ 27,014 Spectrum license acquisitions 8,130 Spectrum licenses transferred to held for sale (87 ) Costs to clear spectrum 3 Balance at June 30, 2017 $ 35,060

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
Fair Value Measurements (Tables)	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of Carrying Values and Fair Values of Long-term Debt	The carrying amounts and fair values of our short-term investments and long-term debt included in our Condensed Consolidated Balance Sheets were as follows: Level within the Fair Value Hierarchy June 30, 2017 December 31, 2016 (in millions) Carrying Amount Fair Value Carrying Amount Fair Value Assets: Deferred purchase price assets 3 $ 676 $ 676 $ 659 $ 659 Liabilities: Guarantee liabilities 3 124 124 135 135 Level within the Fair Value Hierarchy June 30, 2017 December 31, 2016 (in millions) Principal Amount Fair Value Principal Amount Fair Value Liabilities: Senior Notes to third parties 1 $ 11,850 $ 12,691 $ 18,600 $ 19,584 Senior Notes to affiliates 2 7,000 7,243 — — Senior Reset Notes to affiliates 2 3,100 3,343 5,600 5,955 Incremental Term Loan Facility to affiliates 2 4,000 4,000 — — Senior Secured Term Loans 2 — — 1,980 2,005

Debt (Tables)

Debt (Tables)	6 Months Ended
Debt (Tables)	Jun. 30, 2017
Debt Disclosure [Abstract]
Schedule of Debt	The following table sets forth the debt balances and activity as of, and for the six months ended , June 30, 2017 : (in millions) December 31, Issuances and Borrowings (1) Note Redemptions (1) Extinguishments (1) Other (2) June 30, Short-term debt $ 354 $ — $ — $ (20 ) $ 188 $ 522 Long-term debt 21,832 1,495 (8,365 ) (1,947 ) 191 13,206 Total debt to third parties 22,186 1,495 (8,365 ) (1,967 ) 379 13,728 Short-term debt to affiliates — 680 — — — 680 Long-term debt to affiliates 5,600 8,485 — — 1 14,086 Total debt to affiliates 5,600 9,165 — — 1 14,766 Total debt $ 27,786 $ 10,660 $ (8,365 ) $ (1,967 ) $ 380 $ 28,494 (1) Issuances and borrowings, note redemptions and extinguishments are recorded net of related issuance costs, discounts and premiums. Issuances and borrowings for Short-term debt to affiliates represents net outstanding borrowings on our senior secured revolving credit facility. (2) Other includes: $298 million issuances of short-term debt related to vendor financing arrangements, of which $290 million is related to financing of property and equipment. During the six months ended June 30, 2017 , we repaid $292 million under the vendor financing arrangements. As of June 30, 2017 , vendor financing arrangements totaled $6 million . Vendor financing arrangements are included in Short-term debt within Total current liabilities in our Condensed Consolidated Balance Sheets . Additional activity in Other includes capital leases and the amortization of discounts and premiums. As of June 30, 2017 and December 31, 2016 , capital leases outstanding totaled $1.8 billion and $1.4 billion , respectively. During the six months ended June 30, 2017 , we issued the following Senior Notes: (in millions) Principal Issuances (Redemptions) Discounts (1) Net proceeds from issuance of long-term debt 4.000% Senior Notes due 2022 $ 1,000 $ (23 ) $ 977 5.125% Senior Notes due 2025 1,250 (28 ) 1,222 5.375% Senior Notes due 2025 750 (28 ) 722 6.288% Senior Reset Notes due 2019 (1,250 ) — (1,250 ) 6.366% Senior Reset Notes due 2020 (1,250 ) — (1,250 ) Total $ 500 $ (79 ) $ 421 During the six months ended June 30, 2017 , we also issued the following Senior Notes: (in millions) Principal Issuances Premium Net proceeds from issuance of long-term debt 5.300% Senior Notes due 2021 $ 2,000 $ — $ 2,000 6.000% Senior Notes due 2024 1,350 40 1,390 6.000% Senior Notes due 2024 650 24 674 Total $ 4,000 $ 64 $ 4,064 During the six months ended June 30, 2017 , we made the following borrowings: (in millions) Net proceeds from issuance of long-term debt Extinguishments Write-off of discounts and issuance costs (1) LIBOR plus 2.00% Senior Secured Term Loan due 2022 $ 2,000 $ — $ — LIBOR plus 2.25% Senior Secured Term Loan due 2024 2,000 — — LIBOR plus 2.750% Senior Secured Term Loan — (1,980 ) 13 Total $ 4,000 $ (1,980 ) $ 13 (1) Write-off of discounts and issuance costs are included in Other expense, net in our Condensed Consolidated Statements of Comprehensive Income and Other, net within Net cash provided by operating activities in our Condensed Consolidated Statements of Cash Flows . During the six months ended June 30, 2017 , we issued the following Senior Notes: (in millions) Principal Issuances Issuance Costs Net proceeds from issuance of long-term debt 4.000% Senior Notes due 2022 $ 500 $ 2 $ 498 5.125% Senior Notes due 2025 500 2 498 5.375% Senior Notes due 2027 500 1 499 Total $ 1,500 $ 5 $ 1,495
Debt Instrument Redemption	During the six months ended June 30, 2017 , we made the following note redemptions: (in millions) Principal Amount Write-off of premiums, discounts and issuance costs (1) Call Penalties (1) (2) Redemption Redemption Price 6.625% Senior Notes due 2020 $ 1,000 $ (45 ) $ 22 February 10, 2017 102.208 % 5.250% Senior Notes due 2018 500 1 7 March 4, 2017 101.313 % 6.250% Senior Notes due 2021 1,750 (71 ) 55 April 1, 2017 103.125 % 6.464% Senior Notes due 2019 1,250 — — April 28, 2017 100.000 % 6.542% Senior Notes due 2020 1,250 — 21 April 28, 2017 101.636 % 6.633% Senior Notes due 2021 1,250 — 41 April 28, 2017 103.317 % 6.731% Senior Notes due 2022 1,250 — 42 April 28, 2017 103.366 % Total note redemptions $ 8,250 $ (115 ) $ 188 (1) Write-off of premiums, discounts, issuance costs and call penalties are included in Other expense, net in our Condensed Consolidated Statements of Comprehensive Income . Write-off of premiums, discounts and issuance costs are included in Other, net within Net cash provided by operating activities in our Condensed Consolidated Statements of Cash Flows . (2) The call penalty is the excess paid over the principal amount. Call penalties are included within Net cash provided by operating activities in our Condensed Consolidated Statements of Cash Flows .

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
Earnings Per Share (Tables)	Jun. 30, 2017
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	The computation of basic and diluted earnings per share was as follows: Three Months Ended June 30, Six Months Ended June 30, (in millions, except shares and per share amounts) 2017 2016 2017 2016 Net income $ 581 $ 225 $ 1,279 $ 704 Less: Dividends on mandatory convertible preferred stock (14 ) (14 ) (28 ) (28 ) Net income attributable to common stockholders - basic 567 211 1,251 676 Add: Dividends related to mandatory convertible preferred stock 14 — 28 — Net income attributable to common stockholders - diluted $ 581 $ 211 $ 1,279 $ 676 Weighted average shares outstanding - basic 830,971,528 822,434,490 829,356,255 820,933,126 Effect of dilutive securities: Outstanding stock options and unvested stock awards 7,247,653 7,318,466 9,260,131 8,728,927 Mandatory convertible preferred stock 32,237,266 — 32,237,266 — Weighted average shares outstanding - diluted 870,456,447 829,752,956 870,853,652 829,662,053 Earnings per share - basic $ 0.68 $ 0.26 $ 1.51 $ 0.82 Earnings per share - diluted $ 0.67 $ 0.25 $ 1.47 $ 0.81 Potentially dilutive securities: Outstanding stock options and unvested stock awards 48,397 307,573 71,734 465,765 Mandatory convertible preferred stock — 32,237,266 — 32,237,266

Commitments and Contingencies26

Commitments and Contingencies (Tables)	6 Months Ended
Commitments and Contingencies (Tables)	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Payments for Non-Cancelable Operating Leases and Purchase Commitments	Future minimum payments for non-cancelable operating leases and purchase commitments are summarized below: (in millions) Operating Leases Purchase Commitments Year ending June 30, 2018 $ 2,397 $ 2,133 2019 2,132 1,166 2020 1,829 988 2021 1,452 721 2022 1,116 648 Thereafter 2,260 837 Total $ 11,186 $ 6,493

Guarantor Financial Informati27

Guarantor Financial Information (Tables)	6 Months Ended
Guarantor Financial Information (Tables)	Jun. 30, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule of Condensed Consolidating Balance Sheet Information	Condensed Consolidating Balance Sheet Information June 30, 2017 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Assets Current assets Cash and cash equivalents $ 43 $ 1 $ 121 $ 16 $ — $ 181 Accounts receivable, net — — 1,485 234 — 1,719 Equipment installment plan receivables, net — — 2,060 — — 2,060 Accounts receivable from affiliates — — 32 — — 32 Inventories — — 1,208 — — 1,208 Other current assets — — 1,010 570 — 1,580 Total current assets 43 1 5,916 820 — 6,780 Property and equipment, net (1) — — 21,083 340 — 21,423 Goodwill — — 1,683 — — 1,683 Spectrum licenses — — 35,060 — — 35,060 Other intangible assets, net — — 296 — — 296 Investments in subsidiaries, net 19,272 37,056 — — (56,328 ) — Intercompany receivables 299 9,367 — — (9,666 ) — Equipment installment plan receivables due after one year, net — — 1,102 — — 1,102 Other assets — 3 507 305 — 815 Total assets $ 19,614 $ 46,427 $ 65,647 $ 1,465 $ (65,994 ) $ 67,159 Liabilities and Stockholders' Equity Current liabilities Accounts payable and accrued liabilities $ — $ 261 $ 5,705 $ 259 $ — $ 6,225 Payables to affiliates — 119 36 — — 155 Short-term debt — 5 517 — — 522 Short-term debt to affiliates — 680 — — — 680 Deferred revenue — — 851 — — 851 Other current liabilities — — 230 165 — 395 Total current liabilities — 1,065 7,339 424 — 8,828 Long-term debt — 11,915 1,291 — — 13,206 Long-term debt to affiliates — 14,086 — — — 14,086 Tower obligations (1) — — 396 2,210 — 2,606 Deferred tax liabilities — — 5,188 — — 5,188 Deferred rent expense — — 2,660 — — 2,660 Negative carrying value of subsidiaries, net — — 567 — (567 ) — Intercompany payables — — 9,445 221 (9,666 ) — Other long-term liabilities — 89 878 4 — 971 Total long-term liabilities — 26,090 20,425 2,435 (10,233 ) 38,717 Total stockholders' equity (deficit) 19,614 19,272 37,883 (1,394 ) (55,761 ) 19,614 Total liabilities and stockholders' equity $ 19,614 $ 46,427 $ 65,647 $ 1,465 $ (65,994 ) $ 67,159 (1) Assets and liabilities for Non-Guarantor Subsidiaries are primarily included in VIEs related to the 2012 Tower Transaction. See Note 8 – Tower Obligations included in the Annual Report on Form 10-K for the year ended December 31, 2016. Condensed Consolidating Balance Sheet Information December 31, 2016 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Assets Current assets Cash and cash equivalents $ 358 $ 2,733 $ 2,342 $ 67 $ — $ 5,500 Accounts receivable, net — — 1,675 221 — 1,896 Equipment installment plan receivables, net — — 1,930 — — 1,930 Accounts receivable from affiliates — — 40 — — 40 Inventories — — 1,111 — — 1,111 Asset purchase deposit — — 2,203 — — 2,203 Other current assets — — 972 565 — 1,537 Total current assets 358 2,733 10,273 853 — 14,217 Property and equipment, net (1) — — 20,568 375 — 20,943 Goodwill — — 1,683 — — 1,683 Spectrum licenses — — 27,014 — — 27,014 Other intangible assets, net — — 376 — — 376 Investments in subsidiaries, net 17,682 35,095 — — (52,777 ) — Intercompany receivables 196 6,826 — — (7,022 ) — Equipment installment plan receivables due after one year, net — — 984 — — 984 Other assets — 7 600 262 (195 ) 674 Total assets $ 18,236 $ 44,661 $ 61,498 $ 1,490 $ (59,994 ) $ 65,891 Liabilities and Stockholders' Equity Current liabilities Accounts payable and accrued liabilities $ — $ 423 $ 6,474 $ 255 $ — $ 7,152 Payables to affiliates — 79 46 — — 125 Short-term debt — 20 334 — — 354 Deferred revenue — — 986 — — 986 Other current liabilities — — 258 147 — 405 Total current liabilities — 522 8,098 402 — 9,022 Long-term debt — 20,741 1,091 — — 21,832 Long-term debt to affiliates — 5,600 — — — 5,600 Tower obligations (1) — — 400 2,221 — 2,621 Deferred tax liabilities — — 5,133 — (195 ) 4,938 Deferred rent expense — — 2,616 — — 2,616 Negative carrying value of subsidiaries, net — — 568 — (568 ) — Intercompany payables — — 6,785 237 (7,022 ) — Other long-term liabilities — 116 906 4 — 1,026 Total long-term liabilities — 26,457 17,499 2,462 (7,785 ) 38,633 Total stockholders' equity (deficit) 18,236 17,682 35,901 (1,374 ) (52,209 ) 18,236 Total liabilities and stockholders' equity $ 18,236 $ 44,661 $ 61,498 $ 1,490 $ (59,994 ) $ 65,891 (1) Assets and liabilities for Non-Guarantor Subsidiaries are primarily included in VIEs related to the 2012 Tower Transaction. See Note 8 – Tower Obligations included in the Annual Report on
Schedule of Condensed Consolidating Statement of Comprehensive Income Information	Condensed Consolidating Statement of Comprehensive Income Information Three Months Ended June 30, 2017 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Revenues Service revenues $ — $ — $ 7,127 $ 528 $ (210 ) $ 7,445 Equipment revenues — — 2,575 — (69 ) 2,506 Other revenues — — 216 51 (5 ) 262 Total revenues — — 9,918 579 (284 ) 10,213 Operating expenses Cost of services, exclusive of depreciation and amortization shown separately below — — 1,512 6 — 1,518 Cost of equipment sales — — 2,664 251 (69 ) 2,846 Selling, general and administrative — — 2,933 197 (215 ) 2,915 Depreciation and amortization — — 1,501 18 — 1,519 Gains on disposal of spectrum licenses — — (1 ) — — (1 ) Total operating expense — — 8,609 472 (284 ) 8,797 Operating income — — 1,309 107 — 1,416 Other income (expense) Interest expense — (194 ) (23 ) (48 ) — (265 ) Interest expense to affiliates — (132 ) (5 ) — 6 (131 ) Interest income — 8 4 — (6 ) 6 Other expense, net — (91 ) (1 ) — — (92 ) Total other expense, net — (409 ) (25 ) (48 ) — (482 ) Income (loss) before income taxes — (409 ) 1,284 59 — 934 Income tax expense — — (333 ) (20 ) — (353 ) Earnings of subsidiaries 581 990 14 — (1,585 ) — Net income 581 581 965 39 (1,585 ) 581 Dividends on preferred stock (14 ) — — — — (14 ) Net income attributable to common stockholders $ 567 $ 581 $ 965 $ 39 $ (1,585 ) $ 567 Net Income $ 581 $ 581 $ 965 $ 39 $ (1,585 ) $ 581 Other comprehensive income (loss), net of tax Other comprehensive income (loss), net of tax 1 1 1 (1 ) (1 ) 1 Total comprehensive income $ 582 $ 582 $ 966 $ 38 $ (1,586 ) $ 582 Condensed Consolidating Statement of Comprehensive Income Information Three Months Ended June 30, 2016 (in millions) Parent Issuer Guarantor Subsidiaries (As adjusted - See Note 1) Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated (As adjusted - See Note 1) Revenues Service revenues $ — $ — $ 6,574 $ 517 $ (203 ) $ 6,888 Equipment revenues — — 2,298 — (110 ) 2,188 Other revenues — — 167 (1) 49 (5 ) 211 Total revenues — — 9,039 (1) 566 (318 ) 9,287 Operating expenses Cost of services, exclusive of depreciation and amortization shown separately below — — 1,423 6 — 1,429 Cost of equipment sales — — 2,477 251 (109 ) 2,619 Selling, general and administrative — — 2,764 217 (209 ) 2,772 Depreciation and amortization — — 1,555 20 — 1,575 Cost of MetroPCS business combination — — 59 — — 59 Total operating expense — — 8,278 494 (318 ) 8,454 Operating income — — 761 (1) 72 — 833 Other income (expense) Interest expense — (304 ) (18 ) (46 ) — (368 ) Interest expense to affiliates — (93 ) — — — (93 ) Interest income — 8 (5 ) (1) — — 3 Other expense, net — — (3 ) — — (3 ) Total other expense, net — (389 ) (26 ) (1) (46 ) — (461 ) Income (loss) before income taxes — (389 ) 735 26 — 372 Income tax expense — — (138 ) (9 ) — (147 ) Earnings (loss) of subsidiaries 225 614 (1 ) — (838 ) — Net income 225 225 596 17 (838 ) 225 Dividends on preferred stock (14 ) — — — — (14 ) Net income attributable to common stockholders $ 211 $ 225 $ 596 $ 17 $ (838 ) $ 211 Net Income $ 225 $ 225 $ 596 $ 17 $ (838 ) $ 225 Other comprehensive income, net of tax Other comprehensive income, net of tax 3 3 3 — (6 ) 3 Total comprehensive income $ 228 $ 228 $ 599 $ 17 $ (844 ) $ 228 (1) The amortized imputed discount on EIP receivables previously recognized as Interest income has been retrospectively reclassified as Other revenues. See Note 1 - Basis of Presentation for further detail. Condensed Consolidating Statement of Comprehensive Income Information Six Months Ended June 30, 2017 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Revenues Service revenues $ — $ — $ 14,145 $ 1,053 $ (424 ) $ 14,774 Equipment revenues — — 4,718 — (169 ) 4,549 Other revenues — — 410 103 (10 ) 503 Total revenues — — 19,273 1,156 (603 ) 19,826 Operating expenses Cost of services, exclusive of depreciation and amortization shown separately below — — 2,914 12 — 2,926 Cost of equipment sales — — 5,204 497 (169 ) 5,532 Selling, general and administrative — — 5,861 443 (434 ) 5,870 Depreciation and amortization — — 3,047 36 — 3,083 Cost of MetroPCS business combination — — — — — — Gains on disposal of spectrum licenses — — (38 ) — — (38 ) Total operating expenses — — 16,988 988 (603 ) 17,373 Operating income — — 2,285 168 — 2,453 Other income (expense) Interest expense — (458 ) (50 ) (96 ) — (604 ) Interest expense to affiliates — (231 ) (12 ) — 12 (231 ) Interest income — 17 8 — (12 ) 13 Other expense, net — (88 ) (2 ) — — (90 ) Total other expense, net — (760 ) (56 ) (96 ) — (912 ) Income (loss) before income taxes — (760 ) 2,229 72 — 1,541 Income tax expense — — (237 ) (25 ) — (262 ) Earnings (loss) of subsidiaries 1,279 2,039 (17 ) — (3,301 ) — Net income 1,279 1,279 1,975 47 (3,301 ) 1,279 Dividends on preferred stock (28 ) — — — — (28 ) Net income attributable to common stockholders $ 1,251 $ 1,279 $ 1,975 $ 47 $ (3,301 ) $ 1,251 Net Income $ 1,279 $ 1,279 $ 1,975 $ 47 $ (3,301 ) $ 1,279 Other comprehensive income, net of tax Other comprehensive income, net of tax 2 2 2 — (4 ) 2 Total comprehensive income $ 1,281 $ 1,281 $ 1,977 $ 47 $ (3,305 ) $ 1,281 Condensed Consolidating Statement of Comprehensive Income Information Six Months Ended June 30, 2016 (in millions) Parent Issuer Guarantor Subsidiaries (As adjusted - See Note 1) Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated (As adjusted - See Note 1) Revenues Service revenues $ — $ — $ 12,861 $ 980 $ (375 ) $ 13,466 Equipment revenues — — 4,279 — (240 ) 4,039 Other revenues — — 358 (1) 97 (9 ) 446 Total revenues — — 17,498 (1) 1,077 (624 ) 17,951 Operating expenses Cost of services, exclusive of depreciation and amortization shown separately below — — 2,838 12 — 2,850 Cost of equipment sales — — 4,764 468 (239 ) 4,993 Selling, general and administrative — — 5,488 418 (385 ) 5,521 Depreciation and amortization — — 3,087 40 — 3,127 Cost of MetroPCS business combination — — 95 — — 95 Gains on disposal of spectrum licenses — — (636 ) — — (636 ) Total operating expenses — — 15,636 938 (624 ) 15,950 Operating income — — 1,862 (1) 139 — 2,001 Other income (expense) Interest expense — (578 ) (35 ) (94 ) — (707 ) Interest expense to affiliates — (172 ) — — — (172 ) Interest income — 16 (10 ) (1) — — 6 Other expense, net — — (5 ) — — (5 ) Total other expense, net — (734 ) (50 ) (1) (94 ) — (878 ) Income (loss) before income taxes — (734 ) 1,812 45 — 1,123 Income tax expense — — (401 ) (18 ) — (419 ) Earnings (loss) of subsidiaries 704 1,438 (11 ) — (2,131 ) — Net income 704 704 1,400 27 (2,131 ) 704 Dividends on preferred stock (28 ) — — — — (28 ) Net income attributable to common stockholders $ 676 $ 704 $ 1,400 $ 27 $ (2,131 ) $ 676 Net income $ 704 $ 704 $ 1,400 $ 27 $ (2,131 ) $ 704 Other comprehensive income, net of tax Other comprehensive income, net of tax — — — — — — Total comprehensive income $ 704 $ 704 $ 1,400 $ 27 $ (2,131 ) $ 704 (1) The amortized imputed discount on EIP receivables previously recognized as Interest income has been retrospectively reclassified as Other revenues. See Note 1 - Basis of Presentation for further detail.
Schedule of Condensed Consolidating Statement of Cash Flows Information	Condensed Consolidating Statement of Cash Flows Information Three Months Ended June 30, 2017 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Operating activities Net cash provided by (used in) operating activities $ 1 $ (9,785 ) $ 11,663 $ 30 $ (80 ) $ 1,829 Investing activities Purchases of property and equipment — — (1,347 ) — — (1,347 ) Purchases of spectrum licenses and other intangible assets, including deposits — — (5,791 ) — — (5,791 ) Equity investment in subsidiary (308 ) — — — 308 — Other, net — — 5 — — 5 Net cash used in investing activities (308 ) — (7,133 ) — 308 (7,133 ) Financing activities Proceeds from issuance of long-term debt — 4,485 — — — 4,485 Proceeds from borrowing on revolving credit facility, net — 1,855 — — — 1,855 Repayments of revolving credit facility — — (1,175 ) — — (1,175 ) Repayments of capital lease obligations — — (119 ) — — (119 ) Repayments of short-term debt for purchases of inventory, property and equipment, net — — (292 ) — — (292 ) Repayments of long-term debt — — (6,750 ) — — (6,750 ) Equity investment from parent — 308 — — (308 ) — Tax withholdings on share-based awards — — (3 ) — — (3 ) Intercompany dividend paid — — — (80 ) 80 — Dividends on preferred stock (14 ) — — — — (14 ) Other, net 4 — (7 ) — — (3 ) Net cash (used in) provided by financing activities (10 ) 6,648 (8,346 ) (80 ) (228 ) (2,016 ) Change in cash and cash equivalents (317 ) (3,137 ) (3,816 ) (50 ) — (7,320 ) Cash and cash equivalents Beginning of period 360 3,138 3,937 66 — 7,501 End of period $ 43 $ 1 $ 121 $ 16 $ — $ 181 Condensed Consolidating Statement of Cash Flows Information Three Months Ended June 30, 2016 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Operating activities Net cash provided by (used in) operating activities $ 3 $ (1,783 ) $ 3,612 $ 11 $ (75 ) $ 1,768 Investing activities Purchases of property and equipment — — (1,349 ) — — (1,349 ) Purchases of spectrum licenses and other intangible assets, including deposits — — (2,245 ) — — (2,245 ) Sales of short-term investments — 2,000 923 — — 2,923 Other, net — — 4 — — 4 Net cash provided by (used in) investing activities — 2,000 (2,667 ) — — (667 ) Financing activities Proceeds from issuance of long-term debt — 997 — — — 997 Repayments of capital lease obligations — — (43 ) — — (43 ) Repayments of short-term debt for purchases of inventory, property and equipment, net — — (150 ) — — (150 ) Repayments of long-term debt — — (5 ) — — (5 ) Tax withholdings on share-based awards — — (3 ) — — (3 ) Intercompany dividend paid — — — (75 ) 75 — Dividends on preferred stock (14 ) — — — — (14 ) Other, net 13 — (5 ) — — 8 Net cash (used in) provided by financing activities (1 ) 997 (206 ) (75 ) 75 790 Change in cash and cash equivalents 2 1,214 739 (64 ) — 1,891 Cash and cash equivalents Beginning of period 365 1,469 1,700 113 — 3,647 End of period $ 367 $ 2,683 $ 2,439 $ 49 $ — $ 5,538 Condensed Consolidating Statement of Cash Flows Information Six Months Ended June 30, 2017 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Operating activities Net cash provided by (used in) operating activities $ 2 $ (14,875 ) $ 18,466 $ 29 $ (80 ) $ 3,542 Investing activities Purchases of property and equipment — — (2,875 ) — — (2,875 ) Purchases of spectrum licenses and other intangible assets, including deposits — — (5,805 ) — — (5,805 ) Equity investment in subsidiary (308 ) — — — 308 — Other, net — — (3 ) — — (3 ) Net cash used in investing activities (308 ) — (8,683 ) — 308 (8,683 ) Financing activities Proceeds from issuance of long-term debt — 9,980 — — — 9,980 Proceeds from borrowing on revolving credit facility, net — 1,855 — — — 1,855 Repayments of revolving credit facility — — (1,175 ) — — (1,175 ) Repayments of capital lease obligations — — (209 ) — — (209 ) Repayments of short-term debt for purchases of inventory, property and equipment, net — — (292 ) — — (292 ) Repayments of long-term debt — — (10,230 ) — — (10,230 ) Equity investment from parent — 308 — — (308 ) — Tax withholdings on share-based awards — — (95 ) — — (95 ) Intercompany dividend paid — — — (80 ) 80 — Dividends on preferred stock (28 ) — — — — (28 ) Other, net 19 — (3 ) — — 16 Net cash (used in) provided by financing activities (9 ) 12,143 (12,004 ) (80 ) (228 ) (178 ) Change in cash and cash equivalents (315 ) (2,732 ) (2,221 ) (51 ) — (5,319 ) Cash and cash equivalents Beginning of period 358 2,733 2,342 67 — 5,500 End of period $ 43 $ 1 $ 121 $ 16 $ — $ 181 Condensed Consolidating Statement of Cash Flows Information Six Months Ended June 30, 2016 (in millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating and Eliminating Adjustments Consolidated Operating activities Net cash provided by (used in) operating activities $ 3 $ (2,081 ) $ 4,895 $ 51 $ (75 ) $ 2,793 Investing activities Purchases of property and equipment — — (2,684 ) — — (2,684 ) Purchases of spectrum licenses and other intangible assets, including deposits — — (2,839 ) — — (2,839 ) Sales of short-term investments — 2,000 998 — — 2,998 Other, net — — (2 ) — — (2 ) Net cash provided by (used in) investing activities — 2,000 (4,527 ) — — (2,527 ) Financing activities Proceeds from issuance of long-term debt — 997 — — — 997 Repayments of capital lease obligations — — (79 ) — — (79 ) Repayments of short-term debt for purchases of inventory, property and equipment, net — — (150 ) — — (150 ) Repayments of long-term debt — — (10 ) — — (10 ) Tax withholdings on share-based awards — — (49 ) — — (49 ) Intercompany dividend paid — — — (75 ) 75 — Dividends on preferred stock (28 ) — — — — (28 ) Other, net 14 — (5 ) — — 9 Net cash (used in) provided by financing activities (14 ) 997 (293 ) (75 ) 75 690 Change in cash and cash equivalents (11 ) 916 75 (24 ) — 956 Cash and cash equivalents Beginning of period 378 1,767 2,364 73 — 4,582 End of period $ 367 $ 2,683 $ 2,439 $ 49 $ — $ 5,538

Basis of Presentation (Details)

Basis of Presentation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Basis of Presentation (Details) - USD ($) $ in Millions	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other revenues	$ 262	$ 211	$ 503	$ 446
Total revenues	10,213	9,287	19,826	17,951
Operating income	1,416	833	2,453	2,001
Interest income	6	3	13	6
Total other expense, net	(482)	(461)	(912)	(878)
Net Income	581	225	1,279	704
Net cash provided by operating activities	(1,829)	(1,768)	(3,542)	(2,793)
Net cash used in investing activities	(7,133)	(667)	(8,683)	(2,527)
Net Cash Provided by (Used in) Financing Activities	(2,016)	790	(178)	690
Accounting Standards Update 2016-15 [Member] \| Adjustments for New Accounting Principle, Early Adoption [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities	800	900	1,800	1,800
Net cash used in investing activities	800	900	1,800	1,800
Accounting Standards Update 2016-15 [Member] \| Adjustment for Debt Prepayments and Debt Extinguishment Costs [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities	159		188
Net Cash Provided by (Used in) Financing Activities	130		159
Discount On Equipment Installment Plan Receivables [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other revenues	262	211	503	446
Total revenues	10,213	9,287	19,826	17,951
Operating income	1,416	833	2,453	2,001
Interest income	6	3	13	6
Total other expense, net	(482)	(461)	(912)	(878)
Net Income	581	225	1,279	704
Discount On Equipment Installment Plan Receivables [Member] \| Unadjusted [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other revenues	194	146	373	316
Total revenues	10,145	9,222	19,696	17,821
Operating income	1,348	768	2,323	1,871
Interest income	74	68	143	136
Total other expense, net	(414)	(396)	(782)	(748)
Net Income	581	225	1,279	704
Discount On Equipment Installment Plan Receivables [Member] \| Change in Accounting Principle [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other revenues	68	65	130	130
Total revenues	68	65	130	130
Operating income	68	65	130	130
Interest income	(68)	(65)	(130)	(130)
Total other expense, net	(68)	(65)	(130)	(130)
Net Income	$ 0	$ 0	$ 0	$ 0

Equipment Installment Plan Re29

Equipment Installment Plan Receivables EIP Receivables (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Equipment installment plan, maximum payment term	24 months
Equipment installment plan receivables, gross	$ 3,496	$ 3,230
Unamortized imputed discount	(231)	(195)
Equipment installment plan receivables, net of unamortized imputed discount	3,265	3,035
Allowances for credit losses	(103)	(121)
Equipment installment plan receivables, net	3,162	2,914
Equipment Installment Plan Receivables, Net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Equipment installment plan receivables, net	2,060	1,930
Equipment Installment Plan Receivables Due After One Year, Net [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Equipment installment plan receivables, net	$ 1,102	$ 984

Equipment Installment Plan Re30

Equipment Installment Plan Receivables Gross Receivables by Credit Category (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables, gross	$ 3,496	$ 3,230
Unbilled Revenues [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	3,287	3,029
Billed Revenues [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	140	128
Equipment installment plan receivables, past due	69	73
Prime [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables, gross	1,497	1,419
Prime [Member] \| Unbilled Revenues [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	1,416	1,343
Prime [Member] \| Billed Revenues [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	57	51
Equipment installment plan receivables, past due	24	25
Subprime [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables, gross	1,999	1,811
Subprime [Member] \| Unbilled Revenues [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	1,871	1,686
Subprime [Member] \| Billed Revenues [Member]
Financing Receivable, Recorded Investment [Line Items]
Equipment installment plan receivables	83	77
Equipment installment plan receivables, past due	$ 45	$ 48

Equipment Installment Plan Re31

Equipment Installment Plan Receivables Unamortized Imputed Discount and Allowance for Credit Losses (Details) - Equipment Installment Plan Receivable [Member] - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Imputed discount and allowance for credit losses, beginning of period	$ 316	$ 333	$ 333
Bad debt expense	119	126
Write-offs, net of recoveries	(137)	(137)
Changes in imputed discount on short-term and long-term EIP receivables	121	83
Impacts from sales of EIP receivables	(85)	(91)
Imputed discount and allowance for credit losses, end of period	$ 334	$ 314	$ 316
Weighted average effective imputed interest rate	9.70%		9.00%

Sales of Certain Receivables Sa

Sales of Certain Receivables Sales of Service Receivables (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016	Nov. 30, 2016
Variable Interest Entity [Line Items]
Other current assets	$ 1,580	$ 1,537
Accounts payable and accrued liabilities	6,225	7,152
Other current liabilities	395	405
Factoring Arrangement [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Revolving receivables facility, maximum borrowing capacity			$ 950
Revolving receivables facility, outstanding borrowings	879	907
Other current assets	223	207
Accounts payable and accrued liabilities	0	17
Other current liabilities	$ 145	$ 129

Sales of Certain Receivables 33

Sales of Certain Receivables Sales of EIP Receivables (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Variable Interest Entity [Line Items]
Equipment installment plan, maximum payment term	24 months
Other current assets	$ 1,580	$ 1,537
Other assets	815	674
EIP Securitization Arrangement [Member]
Variable Interest Entity [Line Items]
Revolving receivables facility, maximum borrowing capacity			$ 1,300
Revolving receivables facility, outstanding borrowings	$ 1,200	1,200
Equipment installment plan, maximum payment term	24 months
Other current assets	$ 349	371
Other assets	106	83
Other long-term liabilities	$ 3	$ 4

Sales of Certain Receivables 34

Sales of Certain Receivables Sales of Receivables and Continuing Involvement (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Other current assets	$ 1,580		$ 1,580		$ 1,537
Other long-term assets	815		815		674
Accounts payable and accrued liabilities	6,225		6,225		7,152
Other current liabilities	395		395		405
Other long-term liabilities	971		971		1,026
Losses from sales of receivables	80	$ 46	175	$ 98
Factoring and EIP Securitization Arrangement [Member] \| Transferor's Continuing Involvement in Transferred Financial Assets, Transfer Description [Member]
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Maximum exposure to loss, Factoring VIE	1,200		1,200
Factoring and EIP Securitization Arrangement [Member]
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Derecognized net service receivables and EIP receivables	2,422		2,422		2,502
Other current assets	572		572		578
Trading Securities	676		676		659
Other long-term assets	106		106		83
Accounts payable and accrued liabilities	0		0		17
Other current liabilities	145		145		129
Other long-term liabilities	3		3		4
Net cash proceeds since inception			1,952		2,030
Net cash proceeds during the period			(78)		536
Net cash proceeds funded by reinvested collections			2,030		1,494
Losses from sales of receivables	80	$ 46	175	$ 98
Factoring and EIP Securitization Arrangement [Member] \| Other current assets - of which, deferred purchase price [Member]
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Trading Securities	570		570		576
Factoring and EIP Securitization Arrangement [Member] \| Other Assets - of which, deferred purchase price [Member]
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Trading Securities	$ 106		$ 106		$ 83

Spectrum License Transactions S

Spectrum License Transactions Spectrum License Transactions (Details) $ in Millions	May 31, 2017USD ($)	Apr. 30, 2017USD ($)Licenses	Mar. 31, 2017USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Indefinite-lived Intangible Assets [Roll Forward]
Gains on disposal of spectrum licenses				$ 1	$ 0	$ 38	$ 636
Number of licenses \| Licenses		1,525
Payments to acquire intangible assets				5,791	2,245	5,805	2,839
Asset purchase deposit				0		0		$ 2,203
Licensing Agreements [Member]
Indefinite-lived Intangible Assets [Roll Forward]
Spectrum licenses, beginning of year						27,014
Spectrum license acquisitions						8,130
Spectrum licenses transferred to held for sale						(87)
Costs to clear spectrum						3
Spectrum licenses, end of year				35,060		35,060
Gains on disposal of spectrum licenses			$ 37
Spectrum licenses reclassified to held for sale				$ 86		$ 86
Payments to acquire intangible assets		$ 8,000
Asset purchase deposit					$ 2,200		$ 2,200
Remaining purchase price	$ 5,800
Licensing Agreements [Member] \| Fair Value [Member]
Indefinite-lived Intangible Assets [Roll Forward]
Spectrum license acquisitions			$ 123

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value of Short-term Investments and Long-term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Inputs, Level 1 [Member] \| Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 11,850	$ 18,600
Fair Value, Inputs, Level 1 [Member] \| Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	12,691	19,584
Fair Value, Inputs, Level 2 [Member] \| Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Term loans	0	1,980
Fair Value, Inputs, Level 2 [Member] \| Reported Value Measurement [Member] \| Secured Term Loan [$4.0B] [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Term loans	4,000	0
Fair Value, Inputs, Level 2 [Member] \| Reported Value Measurement [Member] \| Deutsche Telekom [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	3,100	5,600
Fair Value, Inputs, Level 2 [Member] \| Reported Value Measurement [Member] \| Deutsche Telekom [Member] \| Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	7,000	0
Fair Value, Inputs, Level 2 [Member] \| Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Term loans	0	2,005
Fair Value, Inputs, Level 2 [Member] \| Fair Value [Member] \| Secured Term Loan [$4.0B] [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Term loans	4,000	0
Fair Value, Inputs, Level 2 [Member] \| Fair Value [Member] \| Deutsche Telekom [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	3,343	5,955
Fair Value, Inputs, Level 2 [Member] \| Fair Value [Member] \| Deutsche Telekom [Member] \| Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	7,243	0
Fair Value, Inputs, Level 3 [Member] \| Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading Securities	676	659
Guarantor liabilities	124	135
Fair Value, Inputs, Level 3 [Member] \| Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading Securities	676	659
Guarantor liabilities	$ 124	$ 135

Fair Value Measurements Guarant

Fair Value Measurements Guarantee Liabilities (Details) $ in Billions	Jun. 30, 2017USD ($)
Fair Value Disclosures [Abstract]
Maximum potential for losses under guarantor liabilities	$ 2.2

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details) - USD ($) $ in Millions	Mar. 16, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Long-term Debt Rollforward [Roll Forward]
Short-term debt, beginning balance				$ 354
Long-term debt, beginning balance				21,832
Total debt to third parties, beginning balance				22,186
Short-term debt to affiliates, beginning balance				0
Long-term debt to affiliates, beginning balance				5,600
Total debt to affiliates, beginning balance				5,600
Total debt, beginning balance				27,786
Proceeds from borrowing on revolving credit facility		$ 1,855	$ 0	1,855	$ 0
Issuances and Borrowings	$ 1,495			1,495
Issuances and Borrowings				10,660
Note Redemptions		(8,365)		(8,365)
Extinguishments				(1,967)
Other				379
Issuances of short-term debt related to vendor financing arrangements				298
Other				380
Short-term debt, ending balance		522		522
Long-term debt, ending balance		13,206		13,206
Total debt to third parties, ending balance		13,728		13,728
Short-term debt to affiliates, ending balance		680		680
Long-term debt to affiliates, ending balance		14,086		14,086
Total debt to affiliates, ending balance		14,766		14,766
Total debt, ending balance		28,494		28,494
Issuance of short-term debt for financing of property and equipment		2	$ 0	290	$ 150
Repayments under vendor financing arrangements				292
Vendor financing arrangements		6		6
Capital leases outstanding		1,800		1,800		$ 1,400
Short-term Debt [Member]
Long-term Debt Rollforward [Roll Forward]
Proceeds from borrowing on revolving credit facility				0
Note Redemptions		0		0
Extinguishments				(20)
Other				188
Long-term Debt [Member]
Long-term Debt Rollforward [Roll Forward]
Issuances and Borrowings				1,495
Note Redemptions		(8,365)		(8,365)
Extinguishments				(1,947)
Other				191
Affiliates [Member]
Long-term Debt Rollforward [Roll Forward]
Issuances and Borrowings				421
Issuances and Borrowings				9,165
Note Redemptions		0		0
Extinguishments				0
Issuances of short-term debt related to vendor financing arrangements				1
Affiliates [Member] \| Short-term Debt [Member]
Long-term Debt Rollforward [Roll Forward]
Issuances and Borrowings				680
Note Redemptions		0		0
Extinguishments				0
Issuances of short-term debt related to vendor financing arrangements				0
Affiliates [Member] \| Long-term Debt [Member]
Long-term Debt Rollforward [Roll Forward]
Issuances and Borrowings				8,485
Note Redemptions		$ 0		0
Extinguishments				0
Issuances of short-term debt related to vendor financing arrangements				$ 1

Debt - Debt to Third Parties -

Debt - Debt to Third Parties - Issuances and Borrowings (Details) - USD ($) $ in Millions	Mar. 16, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,500	$ 1,500
Issuance costs related to public debt issuance	5	5
Proceeds from debt issuances	$ 1,495	1,495
4.000% Senior Notes Due 2022 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		500
Issuance costs related to public debt issuance		2
Proceeds from debt issuances		498
5.125% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		500
Issuance costs related to public debt issuance		2
Proceeds from debt issuances		498
5.375% Senior Notes Due 2027 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		500
Issuance costs related to public debt issuance		1
Proceeds from debt issuances		$ 499

Debt - Debt to Third Parties 40

Debt - Debt to Third Parties - Notes Redemption (Details) - USD ($) $ in Millions	Apr. 28, 2017	Apr. 01, 2017	Mar. 04, 2017	Feb. 10, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Note Redemptions					$ 8,365
Write-off of premiums, discounts and issuance costs					(115)
Call penalties					$ 188
6.625% Senior Notes due 2020 [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)				102.208%
5.250% Senior Notes due 2018 [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)			101.313%
6.250% Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)		103.125%
Interest rate, stated percentage					6.25%
6.464% Senior Notes due 2019 [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)	100.00%
6.542% Senior Notes due 2020 [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)	101.636%
6.633% Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)	103.317%
6.731% Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)	103.366%
Senior Notes [Member]
Debt Instrument [Line Items]
Note Redemptions					$ 8,250
Write-off of premiums, discounts and issuance costs					(13)
Senior Notes [Member] \| 6.625% Senior Notes due 2020 [Member]
Debt Instrument [Line Items]
Note Redemptions					1,000
Write-off of premiums, discounts and issuance costs					(45)
Call penalties					$ 22
Interest rate, stated percentage					6.625%
Senior Notes [Member] \| 5.250% Senior Notes due 2018 [Member]
Debt Instrument [Line Items]
Note Redemptions					$ 500
Write-off of premiums, discounts and issuance costs					1
Call penalties					$ 7
Interest rate, stated percentage					5.25%
Senior Notes [Member] \| 6.250% Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Note Redemptions					$ 1,750
Write-off of premiums, discounts and issuance costs					(71)
Call penalties					55
Senior Notes [Member] \| 6.464% Senior Notes due 2019 [Member]
Debt Instrument [Line Items]
Note Redemptions					1,250
Write-off of premiums, discounts and issuance costs					0
Call penalties					$ 0
Interest rate, stated percentage					6.464%
Senior Notes [Member] \| 6.542% Senior Notes due 2020 [Member]
Debt Instrument [Line Items]
Note Redemptions					$ 1,250
Write-off of premiums, discounts and issuance costs					0
Call penalties					$ 21
Interest rate, stated percentage					6.542%
Senior Notes [Member] \| 6.633% Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Note Redemptions					$ 1,250
Write-off of premiums, discounts and issuance costs					0
Call penalties					$ 41
Interest rate, stated percentage					6.633%
Senior Notes [Member] \| 6.731% Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Note Redemptions					$ 1,250
Write-off of premiums, discounts and issuance costs					0
Call penalties					$ 42
Interest rate, stated percentage					6.731%

Debt - Debt to Affiliates - Iss

Debt - Debt to Affiliates - Issuances and Borrowings (Details) - USD ($)	Apr. 30, 2017	Mar. 16, 2017	Jun. 30, 2017	Sep. 18, 2017	May 09, 2017	Mar. 13, 2017	Jan. 31, 2017	Jan. 25, 2017	Dec. 31, 2016	Jun. 30, 2016
Debt Instrument [Line Items]
Proceeds from debt issuances		$ (1,495,000,000)	$ (1,495,000,000)
Extinguishments			(1,967,000,000)
Write-off of premiums, discounts and issuance costs			115,000,000
Debt instrument, face amount		1,500,000,000	1,500,000,000
Note Redemptions			(8,365,000,000)
Issuance costs related to public debt issuance		$ 5,000,000	5,000,000
Due to affiliate			14,086,000,000						$ 5,600,000,000
Premium					$ 64,000,000
Deutsche Telekom [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			(421,000,000)
Extinguishments			0
Debt instrument, face amount			500,000,000
Note Redemptions			0
Discount			$ (79,000,000)							$ 0
2.00% Margin Plus LIBOR Secured Term Loan due 2022 [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage			2.00%
2.00% Margin Plus LIBOR Secured Term Loan due 2022 [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Secured debt							$ 2,000,000,000
Long-term debt, percentage bearing variable interest, percentage rate							2.00%
2.25% Margin Plus LIBOR Secured Term Loan due 2024 [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage			2.25%
2.25% Margin Plus LIBOR Secured Term Loan due 2024 [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Secured debt							$ 2,000,000,000
Long-term debt, percentage bearing variable interest, percentage rate							2.25%
2.750% Margin Plus LIBOR Secured Term Loan [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage			2.75%
Incremental Term Loan Facility [Member]
Debt Instrument [Line Items]
Debt instrument, face amount							$ 4,000,000,000	$ 4,000,000,000
Refinanced Secured Term Loans [Member]
Debt Instrument [Line Items]
Secured debt							1,980,000,000	$ 1,980,000,000
2.00% Margin Plus LIBOR Secured Term Loan due 2022 and 2.25% Margin Plus LIBOR Secured Term Loan due 2024 [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Issuance costs related to public debt issuance			$ 0
4.000% Senior Notes Due 2022 [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			(498,000,000)
Debt instrument, face amount			$ 500,000,000
Interest rate, stated percentage			4.00%
Issuance costs related to public debt issuance			$ 2,000,000
4.000% Senior Notes Due 2022 [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			(977,000,000)
Debt instrument, face amount			1,000,000,000
Discount			(23,000,000)
5.125% Senior Notes due 2025 [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			(498,000,000)
Debt instrument, face amount			$ 500,000,000
Interest rate, stated percentage			5.125%
Issuance costs related to public debt issuance			$ 2,000,000
5.125% Senior Notes due 2025 [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			(1,222,000,000)
Debt instrument, face amount			1,250,000,000
Discount			(28,000,000)
5.375% Senior Notes Due 2025 [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			(722,000,000)
Debt instrument, face amount			750,000,000
Discount			(28,000,000)
6.288% Senior Reset Notes due 2020 [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			(1,250,000,000)
Note Redemptions			(1,250,000,000)
Discount			0
6.366% Senior Reset Notes due 2020 [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			(1,250,000,000)
Note Redemptions			(1,250,000,000)
Discount			0
6.366% Senior Reset Notes due 2020 [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Debt Instrument [Line Items]
Issuance price percentage of face value	103.183%
6.288% Senior Reset Notes due 2019 [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Debt Instrument [Line Items]
Issuance price percentage of face value	103.144%
5.375% Senior Notes Due 2027 [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			(499,000,000)
Debt instrument, face amount			$ 500,000,000
Interest rate, stated percentage			5.375%
Issuance costs related to public debt issuance			$ 1,000,000
5.375% Senior Notes Due 2027 [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage			5.375%
5.375% Senior Notes Due 2027 [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member] \| Forecast [Member]
Debt Instrument [Line Items]
Debt instrument, face amount				$ 500,000,000
Secured Debt [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Incremental term loan commitment							2,000,000,000		$ 660,000,000
Debt instrument, additional debt capacity							$ 2,000,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			$ (4,000,000,000)
Extinguishments			(1,980,000,000)
Write-off of premiums, discounts and issuance costs			13,000,000
Note Redemptions			(8,250,000,000)
Senior Notes [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			(4,064,000,000)
Due to affiliate			4,000,000,000
Premium			64,000,000
Senior Notes [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 3,000,000,000					$ 3,500,000,000
Senior Notes [Member] \| 2.00% Margin Plus LIBOR Secured Term Loan due 2022 [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			(2,000,000,000)
Extinguishments			0
Write-off of premiums, discounts and issuance costs			0
Senior Notes [Member] \| 2.25% Margin Plus LIBOR Secured Term Loan due 2024 [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			(2,000,000,000)
Extinguishments			0
Write-off of premiums, discounts and issuance costs			0
Senior Notes [Member] \| 2.750% Margin Plus LIBOR Secured Term Loan [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			0
Extinguishments			(1,980,000,000)
Write-off of premiums, discounts and issuance costs			$ 13,000,000
Senior Notes [Member] \| 4.000% Senior Notes Due 2022 [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage			4.00%
Senior Notes [Member] \| 5.125% Senior Notes due 2025 [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage			5.125%
Senior Notes [Member] \| 6.366% Senior Reset Notes due 2020 [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	6.366%		6.366%
Due to affiliate	$ 1,250,000,000
Senior Notes [Member] \| 6.288% Senior Reset Notes due 2019 [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage	6.288%		6.288%
Due to affiliate	$ 1,250,000,000
Senior Notes [Member] \| 5.375% Senior Notes Due 2027 [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage			5.375%
Senior Notes [Member] \| 5.300% Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage			5.30%
Senior Notes [Member] \| 5.300% Senior Notes due 2021 [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			$ (2,000,000,000)
Due to affiliate			2,000,000,000
Premium			$ 0
Senior Notes [Member] \| 6.000% Senior Notes due 2024 [$1.35B] [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage			6.00%
Senior Notes [Member] \| 6.000% Senior Notes due 2024 [$1.35B] [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			$ (1,390,000,000)
Due to affiliate			1,350,000,000
Premium			$ 40,000,000
Senior Notes [Member] \| 6.000% Senior Notes due 2024 [$650M] [Member]
Debt Instrument [Line Items]
Interest rate, stated percentage			6.00%
Senior Notes [Member] \| 6.000% Senior Notes due 2024 [$650M] [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances			$ (674,000,000)
Due to affiliate			650,000,000
Premium			$ 24,000,000
Senior Reset Notes [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Debt Instrument [Line Items]
Proceeds from debt issuances	(421,000,000)
Debt instrument, face amount	2,500,000,000
Discount	$ (79,000,000)

Debt - Debt to Affiliates - Rev

Debt - Debt to Affiliates - Revolving Credit Facility (Details) - USD ($) $ in Millions	Jun. 30, 2017	Mar. 16, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,500	$ 1,500
Deutsche Telekom [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	500
Secured Revolving Credit Facility [Member] \| Line of Credit [Member] \| Deutsche Telekom [Member]
Debt Instrument [Line Items]
Short-term debt to affiliates	680		$ 0
Secured Revolving Credit Facility [Member] \| Line of Credit [Member] \| Deutsche Telekom [Member] \| Revolving Credit Facility [$2.5B] [Member]
Debt Instrument [Line Items]
Incremental term loan commitment	$ 1,500

Income Taxes Narrative (Details

Income Taxes Narrative (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
Income Taxes Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income tax expense	$ 353		$ 147	$ 262	$ 419
Effective income tax rate reconciliation, percent	37.80%		39.50%	17.00%	37.30%
Net tax benefit related to reduction in deferred tax asset valuation allowance	$ 11	$ 270		$ 281
Income tax benefit related to excess tax benefit on share-based compensation				$ 60	$ 21

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net Income	$ 581	$ 225	$ 1,279	$ 704
Less: Dividends on mandatory convertible preferred stock	(14)	(14)	(28)	(28)
Net income attributable to common stockholders	567	211	1,251	676
Add: Dividends related to mandatory convertible preferred stock	14	0	28	0
Net income attributable to common stockholders - diluted	$ 581	$ 211	$ 1,279	$ 676
Weighted average shares outstanding - basic (in shares)	830,971,528	822,434,490	829,356,255	820,933,126
Outstanding stock options and unvested stock awards (in shares)	7,247,653	7,318,466	9,260,131	8,728,927
Mandatory convertible preferred stock (in shares)	32,237,266	0	32,237,266	0
Weighted average shares outstanding - diluted (in shares)	870,456,447	829,752,956	870,853,652	829,662,053
Earnings per share - basic (in USD per share)	$ 0.68	$ 0.26	$ 1.51	$ 0.82
Earnings per share - diluted (in USD per share)	$ 0.67	$ 0.25	$ 1.47	$ 0.81
Outstanding stock options and unvested stock awards (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	48,397	307,573	71,734	465,765
Mandatory convertible preferred stock (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0	32,237,266	0	32,237,266

Commitments and Contingencies O

Commitments and Contingencies Operating Leases and Purchase Commitments (Details) $ in Millions	Jun. 30, 2017USD ($)
Operating Leases
2,018	$ 2,397
2,019	2,132
2,020	1,829
2,021	1,452
2,022	1,116
Thereafter	2,260
Total	11,186
Purchase Commitments
2,018	2,133
2,019	1,166
2,020	988
2,021	721
2,022	648
Thereafter	837
Total	$ 6,493

Guarantor Financial Informati46

Guarantor Financial Information Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2017	May 31, 2017	Apr. 30, 2017	Mar. 31, 2017	Mar. 16, 2017	Mar. 13, 2017	Jan. 31, 2017	Jan. 25, 2017	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Long-term debt	$ 1,500				$ 1,500
Due to affiliate	14,086								$ 5,600
Deutsche Telekom [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt	500
Senior Notes [Member] \| Deutsche Telekom [Member]
Condensed Financial Statements, Captions [Line Items]
Due to affiliate	4,000
Senior Notes [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt			$ 3,000			$ 3,500
Incremental Term Loan Facility [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt							$ 4,000	$ 4,000
Refinanced Secured Term Loans [Member]
Condensed Financial Statements, Captions [Line Items]
Secured debt							$ 1,980	$ 1,980
4.000% Senior Notes Due 2022 [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt	$ 500
Interest rate, stated percentage	4.00%
4.000% Senior Notes Due 2022 [Member] \| Deutsche Telekom [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt	$ 1,000
4.000% Senior Notes Due 2022 [Member] \| Senior Notes [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Condensed Financial Statements, Captions [Line Items]
Interest rate, stated percentage	4.00%
4.000% Senior Notes Due 2022 [Member] \| Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt			$ 1,000	$ 500
Interest rate, stated percentage			4.00%	4.00%
5.125% Senior Notes due 2025 [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt	$ 500
Interest rate, stated percentage	5.125%
5.125% Senior Notes due 2025 [Member] \| Deutsche Telekom [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt	$ 1,250
5.125% Senior Notes due 2025 [Member] \| Senior Notes [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Condensed Financial Statements, Captions [Line Items]
Interest rate, stated percentage	5.125%
5.125% Senior Notes due 2025 [Member] \| Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt			$ 1,250	$ 500
Interest rate, stated percentage			5.125%	5.125%
5.375% Senior Notes Due 2027 [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt	$ 500
Interest rate, stated percentage	5.375%
5.375% Senior Notes Due 2027 [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Condensed Financial Statements, Captions [Line Items]
Interest rate, stated percentage	5.375%
5.375% Senior Notes Due 2027 [Member] \| Senior Notes [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Condensed Financial Statements, Captions [Line Items]
Interest rate, stated percentage	5.375%
5.375% Senior Notes Due 2027 [Member] \| Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt			$ 750	$ 500
Interest rate, stated percentage			5.375%	5.375%
6.288% Senior Reset Notes due 2019 [Member] \| Senior Notes [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Condensed Financial Statements, Captions [Line Items]
Interest rate, stated percentage	6.288%		6.288%
Due to affiliate			$ 1,250
6.366% Senior Reset Notes due 2020 [Member] \| Senior Notes [Member] \| Deutsche Telekom [Member] \| Deutsche Bank [Member]
Condensed Financial Statements, Captions [Line Items]
Interest rate, stated percentage	6.366%		6.366%
Due to affiliate			$ 1,250
5.300% Senior Notes due 2021 [Member] \| Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Interest rate, stated percentage	5.30%
5.300% Senior Notes due 2021 [Member] \| Senior Notes [Member] \| Deutsche Telekom [Member]
Condensed Financial Statements, Captions [Line Items]
Due to affiliate	$ 2,000
5.300% Senior Notes due 2021 [Member] \| Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt		$ 2,000
Interest rate, stated percentage		5.30%
6.000% Senior Notes due 2024 [$1.35B] [Member] \| Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Interest rate, stated percentage	6.00%
6.000% Senior Notes due 2024 [$1.35B] [Member] \| Senior Notes [Member] \| Deutsche Telekom [Member]
Condensed Financial Statements, Captions [Line Items]
Due to affiliate	$ 1,350
6.000% Senior Notes due 2024 [$1.35B] [Member] \| Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt		$ 1,350
Interest rate, stated percentage		6.00%
6.000% Senior Notes due 2024 [$650M] [Member] \| Senior Notes [Member]
Condensed Financial Statements, Captions [Line Items]
Interest rate, stated percentage	6.00%
6.000% Senior Notes due 2024 [$650M] [Member] \| Senior Notes [Member] \| Deutsche Telekom [Member]
Condensed Financial Statements, Captions [Line Items]
Due to affiliate	$ 650
6.000% Senior Notes due 2024 [$650M] [Member] \| Issuer [Member]
Condensed Financial Statements, Captions [Line Items]
Long-term debt		$ 650
Interest rate, stated percentage		6.00%

Guarantor Financial Informati47

Guarantor Financial Information Condensed Consolidating Balance Sheet Information (Details) - USD ($) $ in Millions	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 181	$ 7,501	$ 5,500	$ 5,538	$ 3,647	$ 4,582
Accounts receivable, net	1,719		1,896
Equipment installment plan receivables, net	2,060		1,930
Accounts receivable from affiliates	32		40
Inventories	1,208		1,111
Asset purchase deposit	0		2,203
Other current assets	1,580		1,537
Total current assets	6,780		14,217
Property and equipment, net	21,423		20,943
Goodwill	1,683		1,683
Spectrum licenses	35,060		27,014
Other intangible assets, net	296		376
Investments in subsidiaries, net	0		0
Intercompany receivables	0		0
Equipment installment plan receivables due after one year, net	1,102		984
Other assets	815		674
Total assets	67,159		65,891
Current liabilities
Accounts payable and accrued liabilities	6,225		7,152
Payables to affiliates	155		125
Short-term debt	522		354
Short-term debt to affiliates	680		0
Deferred revenue	851		986
Other current liabilities	395		405
Total current liabilities	8,828		9,022
Long-term debt	13,206		21,832
Long-term debt to affiliates	14,086		5,600
Tower obligations	2,606		2,621
Deferred tax liabilities	5,188		4,938
Deferred rent expense	2,660		2,616
Negative carrying value of subsidiaries, net	0		0
Intercompany payables	0		0
Other long-term liabilities	971		1,026
Total long-term liabilities	38,717		38,633
Total stockholders' equity (deficit)	19,614		18,236
Total liabilities and stockholders' equity	67,159		65,891
Consolidating and Eliminating Adjustments [Member]
Current assets
Cash and cash equivalents	0	0	0	0	0	0
Accounts receivable, net	0		0
Equipment installment plan receivables, net	0		0
Accounts receivable from affiliates	0		0
Inventories	0		0
Asset purchase deposit			0
Other current assets	0		0
Total current assets	0		0
Property and equipment, net	0		0
Goodwill	0		0
Spectrum licenses	0		0
Other intangible assets, net	0		0
Investments in subsidiaries, net	(56,328)		(52,777)
Intercompany receivables	(9,666)		(7,022)
Equipment installment plan receivables due after one year, net	0		0
Other assets	0		(195)
Total assets	(65,994)		(59,994)
Current liabilities
Accounts payable and accrued liabilities	0		0
Payables to affiliates	0		0
Short-term debt	0		0
Short-term debt to affiliates	0
Deferred revenue	0		0
Other current liabilities	0		0
Total current liabilities	0		0
Long-term debt	0		0
Long-term debt to affiliates	0		0
Tower obligations	0		0
Deferred tax liabilities	0		(195)
Deferred rent expense	0		0
Negative carrying value of subsidiaries, net	(567)		(568)
Intercompany payables	(9,666)		(7,022)
Other long-term liabilities	0		0
Total long-term liabilities	(10,233)		(7,785)
Total stockholders' equity (deficit)	(55,761)		(52,209)
Total liabilities and stockholders' equity	(65,994)		(59,994)
Parent [Member]
Current assets
Cash and cash equivalents	43	360	358	367	365	378
Accounts receivable, net	0		0
Equipment installment plan receivables, net	0		0
Accounts receivable from affiliates	0		0
Inventories	0		0
Asset purchase deposit			0
Other current assets	0		0
Total current assets	43		358
Property and equipment, net	0		0
Goodwill	0		0
Spectrum licenses	0		0
Other intangible assets, net	0		0
Investments in subsidiaries, net	19,272		17,682
Intercompany receivables	299		196
Equipment installment plan receivables due after one year, net	0		0
Other assets	0		0
Total assets	19,614		18,236
Current liabilities
Accounts payable and accrued liabilities	0		0
Payables to affiliates	0		0
Short-term debt	0		0
Short-term debt to affiliates	0
Deferred revenue	0		0
Other current liabilities	0		0
Total current liabilities	0		0
Long-term debt	0		0
Long-term debt to affiliates	0		0
Tower obligations	0		0
Deferred tax liabilities	0		0
Deferred rent expense	0		0
Negative carrying value of subsidiaries, net	0		0
Intercompany payables	0		0
Other long-term liabilities	0		0
Total long-term liabilities	0		0
Total stockholders' equity (deficit)	19,614		18,236
Total liabilities and stockholders' equity	19,614		18,236
Issuer [Member]
Current assets
Cash and cash equivalents	1	3,138	2,733	2,683	1,469	1,767
Accounts receivable, net	0		0
Equipment installment plan receivables, net	0		0
Accounts receivable from affiliates	0		0
Inventories	0		0
Asset purchase deposit			0
Other current assets	0		0
Total current assets	1		2,733
Property and equipment, net	0		0
Goodwill	0		0
Spectrum licenses	0		0
Other intangible assets, net	0		0
Investments in subsidiaries, net	37,056		35,095
Intercompany receivables	9,367		6,826
Equipment installment plan receivables due after one year, net	0		0
Other assets	3		7
Total assets	46,427		44,661
Current liabilities
Accounts payable and accrued liabilities	261		423
Payables to affiliates	119		79
Short-term debt	5		20
Short-term debt to affiliates	680
Deferred revenue	0		0
Other current liabilities	0		0
Total current liabilities	1,065		522
Long-term debt	11,915		20,741
Long-term debt to affiliates	14,086		5,600
Tower obligations	0		0
Deferred tax liabilities	0		0
Deferred rent expense	0		0
Negative carrying value of subsidiaries, net	0		0
Intercompany payables	0		0
Other long-term liabilities	89		116
Total long-term liabilities	26,090		26,457
Total stockholders' equity (deficit)	19,272		17,682
Total liabilities and stockholders' equity	46,427		44,661
Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	121	3,937	2,342	2,439	1,700	2,364
Accounts receivable, net	1,485		1,675
Equipment installment plan receivables, net	2,060		1,930
Accounts receivable from affiliates	32		40
Inventories	1,208		1,111
Asset purchase deposit			2,203
Other current assets	1,010		972
Total current assets	5,916		10,273
Property and equipment, net	21,083		20,568
Goodwill	1,683		1,683
Spectrum licenses	35,060		27,014
Other intangible assets, net	296		376
Investments in subsidiaries, net	0		0
Intercompany receivables	0		0
Equipment installment plan receivables due after one year, net	1,102		984
Other assets	507		600
Total assets	65,647		61,498
Current liabilities
Accounts payable and accrued liabilities	5,705		6,474
Payables to affiliates	36		46
Short-term debt	517		334
Short-term debt to affiliates	0
Deferred revenue	851		986
Other current liabilities	230		258
Total current liabilities	7,339		8,098
Long-term debt	1,291		1,091
Long-term debt to affiliates	0		0
Tower obligations	396		400
Deferred tax liabilities	5,188		5,133
Deferred rent expense	2,660		2,616
Negative carrying value of subsidiaries, net	567		568
Intercompany payables	9,445		6,785
Other long-term liabilities	878		906
Total long-term liabilities	20,425		17,499
Total stockholders' equity (deficit)	37,883		35,901
Total liabilities and stockholders' equity	65,647		61,498
Non-Guarantor Subsidiaries [Member]
Current assets
Cash and cash equivalents	16	$ 66	67	$ 49	$ 113	$ 73
Accounts receivable, net	234		221
Equipment installment plan receivables, net	0		0
Accounts receivable from affiliates	0		0
Inventories	0		0
Asset purchase deposit			0
Other current assets	570		565
Total current assets	820		853
Property and equipment, net	340		375
Goodwill	0		0
Spectrum licenses	0		0
Other intangible assets, net	0		0
Investments in subsidiaries, net	0		0
Intercompany receivables	0		0
Equipment installment plan receivables due after one year, net	0		0
Other assets	305		262
Total assets	1,465		1,490
Current liabilities
Accounts payable and accrued liabilities	259		255
Payables to affiliates	0		0
Short-term debt	0		0
Short-term debt to affiliates	0
Deferred revenue	0		0
Other current liabilities	165		147
Total current liabilities	424		402
Long-term debt	0		0
Long-term debt to affiliates	0		0
Tower obligations	2,210		2,221
Deferred tax liabilities	0		0
Deferred rent expense	0		0
Negative carrying value of subsidiaries, net	0		0
Intercompany payables	221		237
Other long-term liabilities	4		4
Total long-term liabilities	2,435		2,462
Total stockholders' equity (deficit)	(1,394)		(1,374)
Total liabilities and stockholders' equity	$ 1,465		$ 1,490

Guarantor Financial Informati48

Guarantor Financial Information Condensed Consolidating Statement of Comprehensive Income Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Service revenues	$ 7,445	$ 6,888	$ 14,774	$ 13,466
Equipment revenues	2,506	2,188	4,549	4,039
Other revenues	262	211	503	446
Total revenues	10,213	9,287	19,826	17,951
Operating expenses
Cost of services, exclusive of depreciation and amortization shown separately below	1,518	1,429	2,926	2,850
Cost of equipment sales	2,846	2,619	5,532	4,993
Selling, general and administrative	2,915	2,772	5,870	5,521
Depreciation and amortization	1,519	1,575	3,083	3,127
Cost of MetroPCS business combination	0	59	0	95
Gains on disposal of spectrum licenses	(1)	0	(38)	(636)
Total operating expense	8,797	8,454	17,373	15,950
Operating income	1,416	833	2,453	2,001
Other income (expense)
Interest expense	(265)	(368)	(604)	(707)
Interest expense to affiliates	(131)	(93)	(231)	(172)
Interest income	6	3	13	6
Other expense, net	(92)	(3)	(90)	(5)
Total other expense, net	(482)	(461)	(912)	(878)
Income before income taxes	934	372	1,541	1,123
Income tax expense	(353)	(147)	(262)	(419)
Earnings (loss) of subsidiaries	0	0	0	0
Net income	581	225	1,279	704
Dividends on preferred stock	(14)	(14)	(28)	(28)
Net income attributable to common stockholders	567	211	1,251	676
Other comprehensive income, net of tax	1	3	2	0
Total comprehensive income	582	228	1,281	704
Consolidating and Eliminating Adjustments [Member]
Revenues
Service revenues	(210)	(203)	(424)	(375)
Equipment revenues	(69)	(110)	(169)	(240)
Other revenues	(5)	(5)	(10)	(9)
Total revenues	(284)	(318)	(603)	(624)
Operating expenses
Cost of services, exclusive of depreciation and amortization shown separately below	0	0	0	0
Cost of equipment sales	(69)	(109)	(169)	(239)
Selling, general and administrative	(215)	(209)	(434)	(385)
Depreciation and amortization	0	0	0	0
Cost of MetroPCS business combination		0	0	0
Gains on disposal of spectrum licenses	0		0	0
Total operating expense	(284)	(318)	(603)	(624)
Operating income	0	0	0	0
Other income (expense)
Interest expense	0	0	0	0
Interest expense to affiliates	(6)	0	(12)	0
Interest income	(6)	0	(12)	0
Other expense, net	0	0	0	0
Total other expense, net	0	0	0	0
Income before income taxes	0	0	0	0
Income tax expense	0	0	0	0
Earnings (loss) of subsidiaries	(1,585)	(838)	(3,301)	(2,131)
Net income	(1,585)	(838)	(3,301)	(2,131)
Dividends on preferred stock	0	0	0	0
Net income attributable to common stockholders	(1,585)	(838)	(3,301)	(2,131)
Other comprehensive income, net of tax	(1)	(6)	(4)	0
Total comprehensive income	(1,586)	(844)	(3,305)	(2,131)
Parent [Member]
Revenues
Service revenues	0	0	0	0
Equipment revenues	0	0	0	0
Other revenues	0	0	0	0
Total revenues	0	0	0	0
Operating expenses
Cost of services, exclusive of depreciation and amortization shown separately below	0	0	0	0
Cost of equipment sales	0	0	0	0
Selling, general and administrative	0	0	0	0
Depreciation and amortization	0	0	0	0
Cost of MetroPCS business combination		0	0	0
Gains on disposal of spectrum licenses	0		0	0
Total operating expense	0	0	0	0
Operating income	0	0	0	0
Other income (expense)
Interest expense	0	0	0	0
Interest expense to affiliates	0	0	0	0
Interest income	0	0	0	0
Other expense, net	0	0	0	0
Total other expense, net	0	0	0	0
Income before income taxes	0	0	0	0
Income tax expense	0	0	0	0
Earnings (loss) of subsidiaries	581	225	1,279	704
Net income	581	225	1,279	704
Dividends on preferred stock	(14)	(14)	28	(28)
Net income attributable to common stockholders	567	211	1,251	676
Other comprehensive income, net of tax	1	3	2	0
Total comprehensive income	582	228	1,281	704
Issuer [Member]
Revenues
Service revenues	0	0	0	0
Equipment revenues	0	0	0	0
Other revenues	0	0	0	0
Total revenues	0	0	0	0
Operating expenses
Cost of services, exclusive of depreciation and amortization shown separately below	0	0	0	0
Cost of equipment sales	0	0	0	0
Selling, general and administrative	0	0	0	0
Depreciation and amortization	0	0	0	0
Cost of MetroPCS business combination		0	0	0
Gains on disposal of spectrum licenses	0		0	0
Total operating expense	0	0	0	0
Operating income	0	0	0	0
Other income (expense)
Interest expense	(194)	(304)	458	(578)
Interest expense to affiliates	(132)	(93)	231	(172)
Interest income	8	8	17	16
Other expense, net	(91)	0	(88)	0
Total other expense, net	(409)	(389)	(760)	(734)
Income before income taxes	(409)	(389)	(760)	(734)
Income tax expense	0	0	0	0
Earnings (loss) of subsidiaries	990	614	2,039	1,438
Net income	581	225	1,279	704
Dividends on preferred stock	0	0	0	0
Net income attributable to common stockholders	581	225	1,279	704
Other comprehensive income, net of tax	1	3	2	0
Total comprehensive income	582	228	1,281	704
Guarantor Subsidiaries [Member]
Revenues
Service revenues	7,127	6,574	14,145	12,861
Equipment revenues	2,575	2,298	4,718	4,279
Other revenues	216	167	410	358
Total revenues	9,918	9,039	19,273	17,498
Operating expenses
Cost of services, exclusive of depreciation and amortization shown separately below	1,512	1,423	2,914	2,838
Cost of equipment sales	2,664	2,477	5,204	4,764
Selling, general and administrative	2,933	2,764	5,861	5,488
Depreciation and amortization	1,501	1,555	3,047	3,087
Cost of MetroPCS business combination		59	0	95
Gains on disposal of spectrum licenses	(1)		38	(636)
Total operating expense	8,609	8,278	16,988	15,636
Operating income	1,309	761	2,285	1,862
Other income (expense)
Interest expense	(23)	(18)	50	(35)
Interest expense to affiliates	(5)	0	12	0
Interest income	4	(5)	8	(10)
Other expense, net	(1)	(3)	(2)	(5)
Total other expense, net	(25)	(26)	(56)	(50)
Income before income taxes	1,284	735	2,229	1,812
Income tax expense	(333)	(138)	(237)	(401)
Earnings (loss) of subsidiaries	14	(1)	(17)	(11)
Net income	965	596	1,975	1,400
Dividends on preferred stock	0	0	0	0
Net income attributable to common stockholders	965	596	1,975	1,400
Other comprehensive income, net of tax	1	3	2	0
Total comprehensive income	966	599	1,977	1,400
Non-Guarantor Subsidiaries [Member]
Revenues
Service revenues	528	517	1,053	980
Equipment revenues	0	0	0	0
Other revenues	51	49	103	97
Total revenues	579	566	1,156	1,077
Operating expenses
Cost of services, exclusive of depreciation and amortization shown separately below	6	6	12	12
Cost of equipment sales	251	251	497	468
Selling, general and administrative	197	217	443	418
Depreciation and amortization	18	20	36	40
Cost of MetroPCS business combination		0	0	0
Gains on disposal of spectrum licenses	0		0	0
Total operating expense	472	494	988	938
Operating income	107	72	168	139
Other income (expense)
Interest expense	(48)	(46)	96	(94)
Interest expense to affiliates	0	0	0	0
Interest income	0	0	0	0
Other expense, net	0	0	0	0
Total other expense, net	(48)	(46)	(96)	(94)
Income before income taxes	59	26	72	45
Income tax expense	(20)	(9)	(25)	(18)
Earnings (loss) of subsidiaries	0	0	0	0
Net income	39	17	47	27
Dividends on preferred stock	0	0	0	0
Net income attributable to common stockholders	39	17	47	27
Other comprehensive income, net of tax	(1)	0	0	0
Total comprehensive income	$ 38	$ 17	$ 47	$ 27

Guarantor Financial Informati49

Guarantor Financial Information Condensed Consolidating Statement of Cash Flows Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating activities
Net cash provided by (used in) operating activities	$ 1,829	$ 1,768	$ 3,542	$ 2,793
Investing activities
Purchases of property and equipment	(1,347)	(1,349)	(2,875)	(2,684)
Purchases of spectrum licenses and other intangible assets, including deposits	(5,791)	(2,245)	(5,805)	(2,839)
Sales of short-term investments	0	2,923	0	2,998
Equity investment in subsidiary	0		0
Other, net	5	4	(3)	(2)
Net cash used in investing activities	(7,133)	(667)	(8,683)	(2,527)
Financing activities
Proceeds from issuance of long-term debt	4,485	997	9,980	997
Proceeds from borrowing on revolving credit facility	1,855	0	1,855	0
Repayments of revolving credit facility	(1,175)	0	(1,175)	0
Repayments of capital lease obligations	(119)	(43)	(209)	(79)
Repayments of short-term debt for purchases of inventory, property and equipment, net	(292)	(150)	(292)	(150)
Repayments of long-term debt	(6,750)	(5)	(10,230)	(10)
Equity investment from parent	0		0
Tax withholdings on share-based awards	(3)	(3)	(95)	(49)
Intercompany dividend paid	0	0	0	0
Dividends on preferred stock	(14)	(14)	(28)	(28)
Other, net	(3)	8	16	9
Net cash (used in) provided by financing activities	(2,016)	790	(178)	690
Change in cash and cash equivalents	(7,320)	1,891	(5,319)	956
Beginning of period	7,501	3,647	5,500	4,582
End of period	181	5,538	181	5,538
Consolidating and Eliminating Adjustments [Member]
Operating activities
Net cash provided by (used in) operating activities	(80)	(75)	(80)	(75)
Investing activities
Purchases of property and equipment	0	0	0	0
Purchases of spectrum licenses and other intangible assets, including deposits	0	0	0	0
Sales of short-term investments		0		0
Equity investment in subsidiary	308		308
Other, net	0	0	0	0
Net cash used in investing activities	308	0	308	0
Financing activities
Proceeds from issuance of long-term debt	0	0	0	0
Proceeds from borrowing on revolving credit facility	0		0
Repayments of revolving credit facility	0		0
Repayments of capital lease obligations	0	0	0	0
Repayments of short-term debt for purchases of inventory, property and equipment, net	0	0	0	0
Repayments of long-term debt	0	0	0	0
Equity investment from parent	(308)		(308)
Tax withholdings on share-based awards	0	0	0	0
Intercompany dividend paid	80	75	80	75
Dividends on preferred stock	0	0	0	0
Other, net	0	0	0	0
Net cash (used in) provided by financing activities	(228)	75	(228)	75
Change in cash and cash equivalents	0	0	0	0
Beginning of period	0	0	0	0
End of period	0	0	0	0
Parent [Member]
Operating activities
Net cash provided by (used in) operating activities	1	3	2	3
Investing activities
Purchases of property and equipment	0	0	0	0
Purchases of spectrum licenses and other intangible assets, including deposits	0	0	0	0
Sales of short-term investments		0		0
Equity investment in subsidiary	(308)		(308)
Other, net	0	0	0	0
Net cash used in investing activities	(308)	0	(308)	0
Financing activities
Proceeds from issuance of long-term debt	0	0	0	0
Proceeds from borrowing on revolving credit facility	0		0
Repayments of revolving credit facility	0		0
Repayments of capital lease obligations	0	0	0	0
Repayments of short-term debt for purchases of inventory, property and equipment, net	0	0	0	0
Repayments of long-term debt	0	0	0	0
Equity investment from parent	0		0
Tax withholdings on share-based awards	0	0	0	0
Intercompany dividend paid	0	0	0	0
Dividends on preferred stock	(14)	(14)	(28)	(28)
Other, net	4	13	19	14
Net cash (used in) provided by financing activities	(10)	(1)	(9)	(14)
Change in cash and cash equivalents	(317)	2	(315)	(11)
Beginning of period	360	365	358	378
End of period	43	367	43	367
Issuer [Member]
Operating activities
Net cash provided by (used in) operating activities	(9,785)	(1,783)	(14,875)	(2,081)
Investing activities
Purchases of property and equipment	0	0	0	0
Purchases of spectrum licenses and other intangible assets, including deposits	0	0	0	0
Sales of short-term investments		2,000		2,000
Equity investment in subsidiary	0		0
Other, net	0	0	0	0
Net cash used in investing activities	0	2,000	0	2,000
Financing activities
Proceeds from issuance of long-term debt	4,485	997	9,980	997
Proceeds from borrowing on revolving credit facility	1,855		1,855
Repayments of revolving credit facility	0		0
Repayments of capital lease obligations	0	0	0	0
Repayments of short-term debt for purchases of inventory, property and equipment, net	0	0	0	0
Repayments of long-term debt	0	0	0	0
Equity investment from parent	308		308
Tax withholdings on share-based awards	0	0	0	0
Intercompany dividend paid	0	0	0	0
Dividends on preferred stock	0	0	0	0
Other, net	0	0	0	0
Net cash (used in) provided by financing activities	6,648	997	12,143	997
Change in cash and cash equivalents	(3,137)	1,214	(2,732)	916
Beginning of period	3,138	1,469	2,733	1,767
End of period	1	2,683	1	2,683
Guarantor Subsidiaries [Member]
Operating activities
Net cash provided by (used in) operating activities	11,663	3,612	18,466	4,895
Investing activities
Purchases of property and equipment	(1,347)	(1,349)	(2,875)	(2,684)
Purchases of spectrum licenses and other intangible assets, including deposits	(5,791)	(2,245)	(5,805)	(2,839)
Sales of short-term investments		923		998
Equity investment in subsidiary	0		0
Other, net	5	4	(3)	(2)
Net cash used in investing activities	(7,133)	(2,667)	(8,683)	(4,527)
Financing activities
Proceeds from issuance of long-term debt	0	0	0	0
Proceeds from borrowing on revolving credit facility	0		0
Repayments of revolving credit facility	(1,175)		(1,175)
Repayments of capital lease obligations	(119)	(43)	(209)	(79)
Repayments of short-term debt for purchases of inventory, property and equipment, net	(292)	(150)	(292)	(150)
Repayments of long-term debt	(6,750)	(5)	(10,230)	(10)
Equity investment from parent	0		0
Tax withholdings on share-based awards	(3)	(3)	(95)	(49)
Intercompany dividend paid	0	0	0	0
Dividends on preferred stock	0	0	0	0
Other, net	(7)	(5)	(3)	(5)
Net cash (used in) provided by financing activities	(8,346)	(206)	(12,004)	(293)
Change in cash and cash equivalents	(3,816)	739	(2,221)	75
Beginning of period	3,937	1,700	2,342	2,364
End of period	121	2,439	121	2,439
Non-Guarantor Subsidiaries [Member]
Operating activities
Net cash provided by (used in) operating activities	30	11	29	51
Investing activities
Purchases of property and equipment	0	0	0	0
Purchases of spectrum licenses and other intangible assets, including deposits	0	0	0	0
Sales of short-term investments		0		0
Equity investment in subsidiary	0		0
Other, net	0	0	0	0
Net cash used in investing activities	0	0	0	0
Financing activities
Proceeds from issuance of long-term debt	0	0	0	0
Proceeds from borrowing on revolving credit facility	0		0
Repayments of revolving credit facility	0		0
Repayments of capital lease obligations	0	0	0	0
Repayments of short-term debt for purchases of inventory, property and equipment, net	0	0	0	0
Repayments of long-term debt	0	0	0	0
Equity investment from parent	0		0
Tax withholdings on share-based awards	0	0	0	0
Intercompany dividend paid	(80)	(75)	(80)	(75)
Dividends on preferred stock	0	0	0	0
Other, net	0	0	0	0
Net cash (used in) provided by financing activities	(80)	(75)	(80)	(75)
Change in cash and cash equivalents	(50)	(64)	(51)	(24)
Beginning of period	66	113	67	73
End of period	$ 16	$ 49	$ 16	$ 49