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Segment Information
 3 Months Ended
Mar. 31, 2024
Segment Reporting [Abstract]  
Segment Information
NOTE 4. SEGMENT INFORMATION
 
Our segments are comprised of strategic business units or other operations that offer products and services to different customer segments over various technology platforms and/or in different geographies that are managed accordingly. We have two reportable segments: Communications and Latin America.
 
We also evaluate segment and business unit performance based on EBITDA and/or EBITDA margin, which is defined as operating income excluding depreciation and amortization. EBITDA is used as part of our management reporting and we believe EBITDA to be a relevant and useful measurement to our investors as it measures the cash generation potential of our business units. EBITDA does not give effect to depreciation and amortization expenses incurred in operating income nor is it burdened by cash used for debt service requirements and thus does not reflect available funds for distributions, reinvestment or other discretionary uses. EBITDA margin is EBITDA divided by total revenue.
The Communications segment provides wireless and wireline telecom and broadband services to consumers located in the U.S. and businesses globally. Our business strategies reflect integrated product offerings that cut across product lines and utilize shared assets. This segment contains the following business units:
•Mobility provides nationwide wireless service and equipment.
•Business Wireline provides advanced ethernet-based fiber services, IP Voice and managed professional services, as well as traditional voice and data services and related equipment to business customers. In the first quarter of 2024, we began offering our fixed wireless access product that provides internet services delivered over our 5G wireless network where available.
•Consumer Wireline provides broadband services, including fiber connections that provide multi-gig services to residential customers in select locations and our fixed wireless access product that provides home internet services delivered over our 5G wireless network where available. Consumer Wireline also provides legacy telephony voice communication services.

The Latin America segment provides wireless services and equipment in Mexico.
 
Corporate and Other reconciles our segment results to consolidated operating income and income before income taxes.

Corporate includes:
•DTV-related retained costs, which are costs previously allocated to the Video business that were retained after the transaction, net of reimbursements from DIRECTV Entertainment Holdings, LLC (DIRECTV) under transition service agreements.
•Parent administration support, which includes costs borne by AT&T where the business units do not influence decision making.
•Securitization fees associated with our sales of receivables (see Note 8).
•Value portfolio, which are businesses no longer integral to our operations or which we no longer actively market.

Other items consists of:
•Certain significant items, which includes items associated with the merger and integration of acquired or divested businesses, including amortization of intangible assets, employee separation charges associated with voluntary and/or strategic offers, asset impairments and abandonments and restructuring, and other items for which the segments are not being evaluated.
 
“Interest expense” and “Other income (expense) – net” are managed only on a total company basis and are, accordingly, reflected only in consolidated results.
For the three months ended March 31, 2024
 RevenuesOperations
and Support
Expenses		EBITDADepreciation
and
Amortization		Operating
Income (Loss)
Communications     
Mobility$20,594 $11,639 $8,955 $2,487 $6,468 
Business Wireline4,913 3,487 1,426 1,362 64 
Consumer Wireline3,350 2,256 1,094 881 213 
Total Communications28,857 17,382 11,475 4,730 6,745 
Latin America - Mexico1,063 883 180 177 3 
Segment Total29,920 18,265 11,655 4,907 6,748 
Corporate and Other     
Corporate:
DTV-related retained costs— 134 (134)120 (254)
Parent administration support— 392 (392)1 (393)
Securitization fees26 165 (139)— (139)
Value portfolio82 26 56 4 52 
Total Corporate108 717 (609)125 (734)
Certain significant items— 152 (152)15 (167)
Total Corporate and Other108 869 (761)140 (901)
AT&T Inc.$30,028 $19,134 $10,894 $5,047 $5,847 
For the three months ended March 31, 2023
 RevenuesOperations and Support ExpensesEBITDADepreciation and AmortizationOperating Income (Loss)
Communications     
Mobility$20,582 $12,213 $8,369 $2,098 $6,271 
Business Wireline5,331 3,623 1,708 1,330 378 
Consumer Wireline3,239 2,284 955 861 94 
Total Communications29,152 18,120 11,032 4,289 6,743 
Latin America - Mexico883 738 145 175 (30)
Segment Total30,035 18,858 11,177 4,464 6,713 
Corporate and Other     
Corporate:
DTV-related retained costs— 169 (169)144 (313)
Parent administration support(9)374 (383)1 (384)
Securitization fees19 121 (102)— (102)
Value portfolio94 28 66 5 61 
Total Corporate104 692 (588)150 (738)
Certain significant items— (44)44 17 27 
Total Corporate and Other104 648 (544)167 (711)
AT&T Inc.$30,139 $19,506 $10,633 $4,631 $6,002 
The following table is a reconciliation of Segment Operating Income to “Income Before Income Taxes” reported in our consolidated statements of income:
 Three months ended
March 31,
 20242023
Communications$6,745 $6,743 
Latin America3 (30)
Segment Operating Income6,748 6,713 
Reconciling Items:
Corporate(734)(738)
Transaction and other costs(32)— 
Amortization of intangibles acquired(15)(17)
Asset impairments and abandonments and restructuring (159)— 
Benefit-related gains (losses)39 44 
AT&T Operating Income5,847 6,002 
Interest expense1,724 1,708 
Equity in net income of affiliates295 538 
Other income (expense) — net
451 935 
Income Before Income Taxes$4,869 $5,767