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v3.21.1

Segment Information - Segment Results and Operating Revenue (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Operating revenues by products and services |  |
Revenues | $ 5,029 | $ 5,228
Cost of services and products | 2,136 | 2,235
Selling, general and administrative | 756 | 853
Less: share-based compensation | (20) | (69)
Total expense | 2,872 | 3,019
Total adjusted EBITDA | 2,157 | 2,209
Operating Segments |  |
Operating revenues by products and services |  |
Revenues | 5,029 | 5,228
Cost of services and products | 924 | 956
Selling, general and administrative | 439 | 482
Less: share-based compensation | 0 | 0
Total expense | 1,363 | 1,438
Total adjusted EBITDA | 3,666 | 3,790
Operating Segments | Business |  |
Operating revenues by products and services |  |
Revenues | 3,595 | 3,737
Cost of services and products | 881 | 907
Selling, general and administrative | 306 | 342
Less: share-based compensation | 0 | 0
Total expense | 1,187 | 1,249
Total adjusted EBITDA | 2,408 | 2,488
Operating Segments | Mass Markets |  |
Operating revenues by products and services |  |
Revenues | 1,434 | 1,491
Cost of services and products | 43 | 49
Selling, general and administrative | 133 | 140
Less: share-based compensation | 0 | 0
Total expense | 176 | 189
Total adjusted EBITDA | 1,258 | 1,302
Operations and Other |  |
Operating revenues by products and services |  |
Revenues | 0 | 0
Cost of services and products | 1,212 | 1,279
Selling, general and administrative | 317 | 371
Less: share-based compensation | (20) | (69)
Total expense | 1,509 | 1,581
Total adjusted EBITDA | $ (1,509) | $ (1,581)

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