Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 9,754	$ 5,135
Accounts receivable, net of allowance for credit losses of $162 and $161	4,286	4,692
Equipment installment plan receivables, net of allowance for credit losses and imputed discount of $575 and $623	3,595	4,456
Inventory	1,789	1,678
Prepaid expenses	953	702
Other current assets	2,154	2,352
Total current assets	22,531	19,015
Property and equipment, net	37,603	40,432
Operating lease right-of-use assets	25,833	27,135
Financing lease right-of-use assets	3,352	3,270
Goodwill	13,015	12,234
Spectrum licenses	98,736	96,707
Other intangible assets, net	2,762	2,618
Equipment installment plan receivables due after one year, net of allowance for credit losses and imputed discount of $130 and $150	1,752	2,042
Other assets	5,158	4,229
Total assets	210,742	207,682
Current liabilities
Accounts payable and accrued liabilities	7,496	10,373
Short-term debt	5,851	3,619
Deferred revenue	1,125	825
Short-term operating lease liabilities	3,328	3,555
Short-term financing lease liabilities	1,252	1,260
Other current liabilities	1,903	1,296
Total current liabilities	20,955	20,928
Tower obligations	3,695	3,777
Deferred tax liabilities	15,849	13,458
Operating lease liabilities	26,821	28,240
Financing lease liabilities	1,185	1,236
Other long-term liabilities	3,968	3,929
Total long-term liabilities	125,537	122,039
Commitments and contingencies (Note 13)
Stockholders' equity
Common stock, par value $0.00001 per share, 2,000,000,000 shares authorized; 1,270,824,969 and 1,262,904,154 shares issued, 1,164,613,922 and 1,195,807,331 shares outstanding	0	0
Additional paid-in capital	68,659	67,705
Treasury stock, at cost, 106,211,047 and 67,096,823 shares	(15,921)	(9,373)
Accumulated other comprehensive loss	(889)	(964)
Retained earnings	12,401	7,347
Total stockholders' equity	64,250	64,715
Total liabilities and stockholders' equity	210,742	207,682
Nonrelated Party
Current liabilities
Long-term debt	72,522	69,903
Related Party
Current liabilities
Long-term debt	$ 1,497	$ 1,496

Sale Leaseback Transaction, Tower Obligation

No definition available.

Name:	tmus_SaleLeasebackTransactionTowerObligation
Namespace Prefix:	tmus_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.