T-Mobile US, Inc.

2104100 - Disclosure - Asset Acquisition

2105100 - Disclosure - Short-term Investments

2106100 - Disclosure - Derivative Instruments and Hedging Activities

2107100 - Disclosure - Intangible Assets

2108100 - Disclosure - Accounts Payable and Accrued Expenses

2109100 - Disclosure - Long-term Debt

2110100 - Disclosure - Fair Value Measurements

2111100 - Disclosure - Concentrations

2112100 - Disclosure - Commitments and Contingencies

2113100 - Disclosure - Share-based Payments (Notes)

0001000 - Document - Document and Entity Information

2114100 - Disclosure - Employee Benefit Plan

2115100 - Disclosure - Income Taxes

2116100 - Disclosure - Net Income Per Common Share

2117100 - Disclosure - Guarantor Subsidiaries

2118100 - Disclosure - Related-Party Transactions

2119100 - Disclosure - Supplemental Cash Flow Information

2120100 - Disclosure - Quarterly Financial Data (Unaudited)

2202201 - Disclosure - Summary of Significant Accounting Policies (Policies)

2302302 - Disclosure - Summary of Significant Accounting Policies (Tables)

2305301 - Disclosure - Short-term Investments (Tables)

1001000 - Statement - Condensed Consolidated Balance Sheets

2306301 - Disclosure - Derivative Instruments and Hedging Activities (Tables)

2307301 - Disclosure - Intangible Assets (Tables)

2308301 - Disclosure - Accounts Payable and Accrued Expenses (Tables)

2309301 - Disclosure - Long-term Debt (Tables)

2310301 - Disclosure - Fair Value Measurements (Tables)

2312301 - Disclosure - Commitments and Contingencies (Tables)

2313301 - Disclosure - Share-based Payments (Tables)

2315301 - Disclosure - Income Taxes (Tables)

2316301 - Disclosure - Net Income Per Common Share (Tables)

2317301 - Disclosure - Guarantor Subsidiaries (Tables)

1001500 - Statement - Condensed Consolidated Balance Sheets Parentheticals

2318301 - Disclosure - Related-Party Transactions (Tables)

2319301 - Disclosure - Supplemental Cash Flow Information (Tables)

2320301 - Disclosure - Quarterly Financial Data (Unaudited) (Tables)

2401401 - Disclosure - Organization and Business Operations (Details)

2402403 - Disclosure - Summary of Significant Accounting Policies (Details)

2402404 - Disclosure - Summary of Significant Accounting Policies Allowance for Uncollectible Accounts Receivable (Details)

2402405 - Disclosure - Summary of Significant Accounting Policies Schedule of Property and Equipment (Details)

2402406 - Disclosure - Summary of Significant Accounting Policies Asset Retirement Obligation (Details)

2404401 - Disclosure - Asset Acquisition (Details)

2405402 - Disclosure - Short-term Investments Investments Classified by Contractual Maturity Date (Details)

1002000 - Statement - Condensed Consolidated Statements of Income and Comprehensive Income

2406402 - Disclosure - Derivative Instruments and Hedging Activities (Details)

2406403 - Disclosure - Derivative Instruments and Hedging Activities Schedule of Derivative Instruments in Statement of Financial Position (Details)

2406404 - Disclosure - Derivative Instruments and Hedging Activities Effect of Derivative Instruments on Statement of Income and Comprehenive Income (Details)

2407402 - Disclosure - Intangible Assets (Details)

2408402 - Disclosure - Accounts Payable and Accrued Expenses (Details)

2409402 - Disclosure - Long-term Debt (Details)

2409403 - Disclosure - Long-term Debt Maturities (Details)

2409404 - Disclosure - Long-term Debt Instruments (Details)

2410402 - Disclosure - Fair Value Measurements (Details)

2410403 - Disclosure - Fair Value Measurements Derivatives Observable Inputs Reconciliation (Details)

1002500 - Statement - Condensed Consolidated Statements of Income and Comprehensive Income Parentheticals

2410404 - Disclosure - Fair Value Measurements Unobservable Inputs Reconciliation (Details)

2410405 - Disclosure - Fair Value Measurements Fair Value Disclosure, Fair Value and Carrying Amounts (Details)

2412402 - Disclosure - Commitments and Contingencies Operating and Capital Leases (Details)

2412403 - Disclosure - Commitments and Contingencies Purchase Obligations (Details)

2413402 - Disclosure - Share-based Payments Share-Based Compensation (Details)

2413403 - Disclosure - Share-based Payments Share-Based Payments Plan (Details)

2413404 - Disclosure - Share-based Payments Share-Based Payments Fair Value Assumptions (Details)

2413405 - Disclosure - Share-based Payments Share-Based Payments Stock Option Awards (Details)

2413406 - Disclosure - Share-based Payments Share-Based Payments Restriced Stock Awards (Details)

2414401 - Disclosure - Employee Benefit Plan (Details)

1003000 - Statement - Consolidated Statements of Stockholders' Equity

2415402 - Disclosure - Income Taxes Components of Income Tax Provision (Details)

2415403 - Disclosure - Income Taxes Effective Income Tax Rate Reconciliation (Details)

2415404 - Disclosure - Income Taxes Components of Deferred Tax Assets and Liabilities (Details)

2415405 - Disclosure - Income Taxes Uncertain Tax Positions (Details)

2416402 - Disclosure - Net Income Per Common Share (Details)

2417402 - Disclosure - Guarantor Subsidiaries Schedule of Condensed Consolidated Balance Sheets (Details)

2417403 - Disclosure - Guarantor Subsidiaries Schedule of Condensed Consolidated Statements of Income (Details)

2417404 - Disclosure - Guarantor Subsidiaries Schedule of Condensed Consolidated Statements of Cash Flows (Details)

2418402 - Disclosure - Related-Party Transactions (Details)

2419402 - Disclosure - Supplemental Cash Flow Information (Details)

1004000 - Statement - Condensed Consolidated Statements of Cash Flows

2420402 - Disclosure - Quarterly Financial Data (Unaudited) (Details)

2101100 - Disclosure - Organization and Business Operations

2102100 - Disclosure - Summary of Significant Accounting Policies