T-Mobile US, Inc.

0000001 - Document - Cover Page

0000002 - Document - Audit Information

0000003 - Statement - Consolidated Balance Sheets

0000004 - Statement - Consolidated Balance Sheets (Parenthetical)

0000005 - Statement - Consolidated Statements of Comprehensive Income

0000006 - Statement - Consolidated Statements of Comprehensive Income (Parenthetical)

0000007 - Statement - Consolidated Statements of Cash Flows

0000008 - Statement - Consolidated Statements of Cash Flows (Parenthetical)

0000009 - Statement - Consolidated Statement of Stockholders??? Equity

0000010 - Statement - Consolidated Statement of Stockholders??? Equity (Parenthetical)

0000011 - Disclosure - Summary of Significant Accounting Policies

0000012 - Disclosure - Business Combinations

0000013 - Disclosure - Receivables and Related Allowance for Credit Losses

0000014 - Disclosure - Sales of Certain Receivables

0000015 - Disclosure - Property and Equipment

0000016 - Disclosure - Goodwill, Spectrum License Transactions and Other Intangible Assets

0000017 - Disclosure - Fair Value Measurements

0000018 - Disclosure - Debt

0000019 - Disclosure - Tower Obligations

0000020 - Disclosure - Revenue from Contracts with Customers

0000021 - Disclosure - Employee Compensation and Benefit Plans

0000022 - Disclosure - Income Taxes

0000023 - Disclosure - Stockholder Return Programs

0000024 - Disclosure - Wireline

0000025 - Disclosure - Earnings Per Share

0000026 - Disclosure - Leases

0000027 - Disclosure - Commitments and Contingencies

0000028 - Disclosure - Restructuring Costs

0000029 - Disclosure - Additional Financial Information

0000030 - Disclosure - Subsequent Events

995410 - Disclosure - Pay vs Performance Disclosure

995445 - Disclosure - Insider Trading Arrangements

9954471 - Disclosure - Summary of Significant Accounting Policies (Policies)

9954472 - Disclosure - Business Combinations (Tables)

9954473 - Disclosure - Receivables and Related Allowance for Credit Losses (Tables)

9954474 - Disclosure - Sales of Certain Receivables (Tables)

9954475 - Disclosure - Property and Equipment (Tables)

9954476 - Disclosure - Goodwill, Spectrum License Transactions and Other Intangible Assets (Tables)

9954477 - Disclosure - Fair Value Measurements (Tables)

9954478 - Disclosure - Debt (Tables)

9954479 - Disclosure - Tower Obligations (Tables)

9954480 - Disclosure - Revenue from Contracts with Customers (Tables)

9954481 - Disclosure - Employee Compensation and Benefit Plans (Tables)

9954482 - Disclosure - Income Taxes (Tables)

9954483 - Disclosure - Earnings Per Share (Tables)

9954484 - Disclosure - Leases (Tables)

9954485 - Disclosure - Restructuring Costs (Tables)

9954486 - Disclosure - Additional Financial Information (Tables)

9954487 - Disclosure - Summary of Significant Accounting Policies - Narrative (Details)

9954488 - Disclosure - Business Combinations - Narrative (Details)

9954489 - Disclosure - Business Combinations - Assets Acquired and Liabilities Assumed (Details)

9954490 - Disclosure - Receivables and Related Allowance for Credit Losses - Schedule of Equipment Installment Plan Receivables (Details)

9954491 - Disclosure - Receivables and Related Allowance for Credit Losses - Schedule of Equipment Installment Plan Receivables by Credit Category (Details)

9954492 - Disclosure - Receivables and Related Allowance for Credit Losses - Schedule of Write Offs Net of Recoveries (Details)

9954493 - Disclosure - Receivables and Related Allowance for Credit Losses - Schedule of Unamortized Imputed Discount and Allowance for Credit Losses for Equipment Installment Plan Receivables (Details)

9954494 - Disclosure - Sales of Certain Receivables - Schedule of Variable Interest Entities - EIP (Details)

9954495 - Disclosure - Sales of Certain Receivables - Schedule of Variable Interest Entities (Details)

9954496 - Disclosure - Sales of Certain Receivables - Schedule of Factoring Arrangement (Details)

9954497 - Disclosure - Property and Equipment (Details)

9954498 - Disclosure - Property and Equipment - Asset Retirement Obligation (Details)

9954499 - Disclosure - Goodwill, Spectrum License Transactions and Other Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Details)

9954500 - Disclosure - Goodwill, Spectrum License Transactions and Other Intangible Assets - Narrative (Details)

9954501 - Disclosure - Goodwill, Spectrum License Transactions and Other Intangible Assets - Schedule of Spectrum Licenses (Details)

9954502 - Disclosure - Goodwill, Spectrum License Transactions and Other Intangible Assets - Other Intangible Assets (Details)

9954503 - Disclosure - Fair Value Measurements - Narrative (Details)

9954504 - Disclosure - Fair Value Measurements - Schedule of Carrying Values and Fair Values of Long-term Debt (Details)

9954505 - Disclosure - Debt - Schedule of Debt (Details)

9954506 - Disclosure - Debt - Narrative (Details)

9954507 - Disclosure - Debt - Schedule of Issuances and Borrowings (Details)

9954508 - Disclosure - Debt - Schedule of Debt Instrument Redemption and Repayments (Details)

9954509 - Disclosure - Debt - Schedule of Maturities of ABS Notes (Details)

9954510 - Disclosure - Debt - Schedule of Variable Interest Entities (Details)

9954511 - Disclosure - Tower Obligations - Narrative (Details)

9954512 - Disclosure - Tower Obligations - Schedule of Impacts to Consolidated Balance Sheets (Details)

9954513 - Disclosure - Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (Details)

9954514 - Disclosure - Revenue from Contracts with Customers - Schedule of Contract Liability and Receivable Balances (Details)

9954515 - Disclosure - Revenue from Contracts with Customers - Remaining Performance Obligations, Branded Postpaid Contracts (Details)

9954516 - Disclosure - Revenue from Contracts with Customers - Contract Costs (Details)

9954517 - Disclosure - Revenue from Contracts with Customers - Remaining Performance Obligations (Details)

9954518 - Disclosure - Employee Compensation and Benefit Plans - Narrative (Details)

9954519 - Disclosure - Employee Compensation and Benefit Plans - Schedule of Stock-based Compensation Expense and Related Income Tax Benefits (Details)

9954520 - Disclosure - Employee Compensation and Benefit Plans - Schedule of Restricted Stock and Unit Awards and Performance Restricted Stock Units Activity (Details)

9954521 - Disclosure - Employee Compensation and Benefit Plans - Employee Stock Purchase Plan (Details)

9954522 - Disclosure - Employee Compensation and Benefit Plans - Pension Plan (Details)

9954523 - Disclosure - Employee Compensation and Benefit Plans - Employee Retirement Savings Plan (Details)

9954524 - Disclosure - Income Taxes - Income Tax Domestic and Foreign (Details)

9954525 - Disclosure - Income Taxes - Components of Income Tax Expense (Details)

9954526 - Disclosure - Income Taxes - Effective Income Tax Rate Reconciliation (Details)

9954527 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities (Details)

9954528 - Disclosure - Income Taxes - Narrative (Details)

9954529 - Disclosure - Income Taxes - Unrecognized Tax Benefits (Details)

9954530 - Disclosure - Stockholder Return Programs - Narrative (Details)

9954531 - Disclosure - Wireline - Narrative (Details)

9954532 - Disclosure - Earnings Per Share - Schedule of Computation of Basic and Diluted Earnings Per Share (Details)

9954533 - Disclosure - Earnings Per Share - Narrative (Details)

9954534 - Disclosure - Leases - Narrative (Details)

9954535 - Disclosure - Leases - Components of Lease Expense (Details)

9954536 - Disclosure - Leases - Schedule of Information Related to Lease Term and Discount Rate (Details)

9954537 - Disclosure - Leases - Maturity of Operating and Finance Lease Liabilities (Details)

9954538 - Disclosure - Leases - Leased Wireless Devices (Details)

9954539 - Disclosure - Leases - Schedule of Future Minimum Payments Expected to be Received (under 842) (Details)

9954540 - Disclosure - Commitments and Contingencies - Narrative (Details)

9954541 - Disclosure - Restructuring Costs - Schedule of Restructuring Plan Expenses Incurred (Details)

9954542 - Disclosure - Restructuring Costs - Narrative (Details)

9954543 - Disclosure - Restructuring Costs - Schedule of Activity Related to Expenses Incurred and Cash Payments Made (Details)

9954544 - Disclosure - Restructuring Costs - Schedule of Workforce Reduction Incurred and Cash Payments Made (Details)

9954545 - Disclosure - Additional Financial Information - Schedule of Accounts Payable and Accrued Liabilities (Details)

9954546 - Disclosure - Additional Financial Information - Related Party Transactions (Details)

9954547 - Disclosure - Additional Financial Information - Narrative (Details)

9954548 - Disclosure - Additional Financial Information - Schedule of Supplemental Consolidated Statements of Cash Flows Information (Details)

9954549 - Disclosure - Additional Financial Information - Schedule of Cash and Cash Equivalents, Including Restricted Cash and Cash Held for Sale (Details)

9954550 - Disclosure - Subsequent Events - Narrative (Details)