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Business Segment Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | $ 4,964 |  | $ 5,160 |  | $ 5,413
Selling, general and administrative | 1,721 |  | 1,753 |  | 1,768
Expenses related to strategic alternatives review | 56 |  | 13 |  |
Income (loss) before income taxes | (20) |  | (477) |  | 125
Depreciation, amortization and accretion | (943) |  | (915) |  | (929)
Loss on impairment of intangible assets | (137) |  | (547) |  | (3)
Gain (loss) on asset disposals, net | (30) |  | (27) |  | (27)
Gain (loss) on sale of business and other exit costs, net | 68 |  | 0 |  | 1
Gain (loss) on license sales and exchanges, net | (3) |  | 2 |  | 0
Equity in earnings of unconsolidated entities | 164 |  | 159 |  | 159
Interest and dividend income | 27 |  | 20 |  | 17
Interest expense | (279) |  | (244) |  | (174)
Income (loss) before income taxes | (20) |  | (477) |  | 125
Depreciation, amortization and accretion | (943) |  | (915) |  | (929)
Loss on impairment of intangible assets | (137) |  | (547) |  | (3)
Gain (loss) on asset disposals, net | (30) |  | (27) |  | (27)
Gain (loss) on sale of business and other exit costs, net | 68 |  | 0 |  | 1
Investments in unconsolidated entities | 500 |  | 505 |  | 495
Total assets | 13,682 | [1] | 13,921 | [1] | 14,550
Capital expenditures | 906 |  | 1,197 |  | 1,285
All Other |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 137 |  | 230 |  | 228
Income (loss) before income taxes | (118) |  | (79) |  | (23)
Depreciation, amortization and accretion | (7) |  | (14) |  | (14)
Loss on impairment of intangible assets | 0 |  | 0 |  | 0
Gain (loss) on asset disposals, net | 0 |  | 0 |  | (1)
Gain (loss) on sale of business and other exit costs, net | 19 |  |  |  | 0
Gain (loss) on license sales and exchanges, net | 0 |  | 0 |  |
Equity in earnings of unconsolidated entities | 161 |  | 158 |  | 158
Interest and dividend income | 12 |  | 10 |  | 8
Interest expense | 178 |  | 188 |  | 156
Income (loss) before income taxes | (118) |  | (79) |  | (23)
Depreciation, amortization and accretion | (7) |  | (14) |  | (14)
Loss on impairment of intangible assets | 0 |  | 0 |  | 0
Gain (loss) on asset disposals, net | 0 |  | 0 |  | (1)
Gain (loss) on sale of business and other exit costs, net | 19 |  |  |  | 0
Investments in unconsolidated entities | 42 |  | 40 |  | 39
Total assets | 322 |  | 307 |  | 375
Capital expenditures | 5 |  | 9 |  | 12
UScellular Total |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Investments in unconsolidated entities | 454 |  | 461 |  | 452
Total assets | 10,449 |  | 10,750 |  | 11,119
TDS Telecom | Operating segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 1,057 |  | 1,024 |  | 1,016
Selling, general and administrative | 320 |  | 326 |  | 313
Other segment items | (9) |  | (6) |  | (3)
Expenses related to strategic alternatives review | 0 |  | 0 |  |
Segment Adjusted EBITDA (Non-GAAP) | 350 |  | 285 |  | 291
Depreciation, amortization and accretion | (271) |  | (245) |  | (215)
Loss on impairment of intangible assets | (1) |  | (547) |  | 0
Gain (loss) on asset disposals, net | (12) |  | (10) |  | (7)
Gain (loss) on sale of business and other exit costs, net | 49 |  |  |  | 0
Gain (loss) on license sales and exchanges, net | 0 |  | 0 |  |
Depreciation, amortization and accretion | (271) |  | (245) |  | (215)
Loss on impairment of intangible assets | (1) |  | (547) |  | 0
Gain (loss) on asset disposals, net | (12) |  | (10) |  | (7)
Gain (loss) on sale of business and other exit costs, net | 49 |  |  |  | 0
Investments in unconsolidated entities | 4 |  | 4 |  | 4
Total assets | 2,911 |  | 2,864 |  | 3,056
Capital expenditures | 324 |  | 577 |  | 556
TDS Telecom | Intersegment Revenues |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 4 |  | 4 |  | 4
TDS Telecom | Operating Segments Excluding Intersegment Elimination |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 1,061 |  | 1,028 |  | 1,020
Wireless Segment | Operating segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 3,667 |  | 3,805 |  | 4,076
Selling, general and administrative | 1,298 |  | 1,334 |  | 1,376
Other segment items | 0 |  | 0 |  | 0
Expenses related to strategic alternatives review | (33) |  | (8) |  |
Segment Adjusted EBITDA (Non-GAAP) | 719 |  | 697 |  | 677
Depreciation, amortization and accretion | (620) |  | (610) |  | (655)
Loss on impairment of intangible assets | (136) |  | 0 |  | (3)
Gain (loss) on asset disposals, net | (17) |  | (19) |  | (19)
Gain (loss) on sale of business and other exit costs, net | 0 |  |  |  | 1
Gain (loss) on license sales and exchanges, net | (3) |  | 2 |  |
Depreciation, amortization and accretion | (620) |  | (610) |  | (655)
Loss on impairment of intangible assets | (136) |  | 0 |  | (3)
Gain (loss) on asset disposals, net | (17) |  | (19) |  | (19)
Gain (loss) on sale of business and other exit costs, net | 0 |  |  |  | 1
Capital expenditures | 554 |  | 580 |  | 689
Wireless Segment | Intersegment Revenues |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 0 |  | 0 |  | 0
Wireless Segment | Operating Segments Excluding Intersegment Elimination |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 3,667 |  | 3,805 |  | 4,076
Towers Segment | Operating segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 103 |  | 101 |  | 93
Selling, general and administrative | 32 |  | 34 |  | 32
Other segment items | 0 |  | 0 |  | 0
Expenses related to strategic alternatives review | (2) |  | 0 |  |
Segment Adjusted EBITDA (Non-GAAP) | 126 |  | 121 |  | 113
Depreciation, amortization and accretion | (45) |  | (46) |  | (45)
Loss on impairment of intangible assets | 0 |  | 0 |  | 0
Gain (loss) on asset disposals, net | (1) |  | 2 |  | 0
Gain (loss) on sale of business and other exit costs, net | 0 |  |  |  | 0
Gain (loss) on license sales and exchanges, net | 0 |  | 0 |  |
Depreciation, amortization and accretion | (45) |  | (46) |  | (45)
Loss on impairment of intangible assets | 0 |  | 0 |  | 0
Gain (loss) on asset disposals, net | (1) |  | 2 |  | 0
Gain (loss) on sale of business and other exit costs, net | 0 |  |  |  | 0
Capital expenditures | 23 |  | 31 |  | 28
Towers Segment | Intersegment Revenues |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 131 |  | 127 |  | 123
Towers Segment | Operating Segments Excluding Intersegment Elimination |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 234 |  | 228 |  | 216
Total |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 4,827 |  | 4,930 |  | 5,185
Expenses related to strategic alternatives review | 35 |  | 8 |  |
Segment Adjusted EBITDA (Non-GAAP) | 1,195 |  | 1,103 |  | 1,081
Depreciation, amortization and accretion | (936) |  | (901) |  | (915)
Loss on impairment of intangible assets | (137) |  | (547) |  | (3)
Gain (loss) on asset disposals, net | (30) |  | (27) |  | (26)
Gain (loss) on sale of business and other exit costs, net | 49 |  |  |  | 1
Gain (loss) on license sales and exchanges, net | (3) |  | 2 |  |
Depreciation, amortization and accretion | (936) |  | (901) |  | (915)
Loss on impairment of intangible assets | (137) |  | (547) |  | (3)
Gain (loss) on asset disposals, net | (30) |  | (27) |  | (26)
Gain (loss) on sale of business and other exit costs, net | 49 |  |  |  | 1
Investments in unconsolidated entities | 4 |  | 4 |  | 4
Total assets | 2,911 |  | 2,864 |  | 3,056
Capital expenditures | 901 |  | 1,188 |  | 1,273
Total | Intersegment Revenues |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 135 |  | 131 |  | 127
Total | Operating Segments Excluding Intersegment Elimination |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 4,962 |  | 5,061 |  | 5,312
Total | Intra-company eliminations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | (135) |  | (131) |  | (127)
Service |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 4,110 |  | 4,169 |  | 4,240
Cost of goods and services sold | 1,174 |  | 1,240 |  | 1,245
Service | TDS Telecom | Operating segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Cost of goods and services sold | 400 |  | 423 |  | 418
Service | Wireless Segment | Operating segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Cost of goods and services sold | 777 |  | 794 |  | 807
Service | Towers Segment | Operating segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Cost of goods and services sold | 78 |  | 73 |  | 71
Equipment and product sales |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total operating revenues | 854 |  | 991 |  | 1,173
Cost of goods and services sold | 961 |  | 1,094 |  | 1,320
Equipment and product sales | TDS Telecom | Operating segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Cost of goods and services sold | 1 |  | 0 |  | 1
Equipment and product sales | Wireless Segment | Operating segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Cost of goods and services sold | 906 |  | 988 |  | 1,216
Equipment and product sales | Towers Segment | Operating segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Cost of goods and services sold | $ 0 |  | $ 0 |  | $ 0
[1] | The consolidated total assets as of December 31, 2024 and 2023, include assets held by consolidated variable interest entities (VIEs) of $983 million and $1,188 million, respectively, which are not available to be used to settle the obligations of TDS. The consolidated total liabilities as of December 31, 2024 and 2023, include certain liabilities of consolidated VIEs of $24 million and $23 million, respectively, for which the creditors of the VIEs have no recourse to the general credit of TDS. See Note 16 — Variable Interest Entities for additional information.

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