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v3.21.1

Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Segment Reporting Information [Line Items] |  |  |
Revenue |  | $ 5,223 | $ 7,455
Income (Loss) Before Taxes |  | 386 | (8,089)
Pretax segment operating income |  | 664 | 776
Interest expense |  | 136 | 136
Digital Integration |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue |  | 773 | 885
Reservoir Performance |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue |  | 1,002 | 1,969
Production Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue |  | 1,590 | 1,912
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue |  | 5,223 | 7,455
Interest income |  | 1 |
Interest expense |  | 4 | 7
Operating Segments | Digital Integration |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue |  | 773 | 885
Income (Loss) Before Taxes |  | 247 | 151
Operating Segments | Reservoir Performance |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue |  | 1,002 | 1,969
Income (Loss) Before Taxes |  | 102 | 134
Operating Segments | Well Construction |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue |  | 1,935 | 2,815
Income (Loss) Before Taxes |  | 209 | 331
Operating Segments | Production Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue |  | 1,590 | 1,912
Income (Loss) Before Taxes |  | 138 | 191
Eliminations & other |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue |  | (77) | (126)
Income (Loss) Before Taxes |  | (32) | (31)
Corporate & other | [1] | (150) | (228)
Interest income | [2] | 4 | 15
Interest expense | [3] | $ (132) | (129)
Charges and credits | [4] |  | $ (8,523)
[1] | Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items.
[2] | Interest income excludes amounts which are included in the segments’ income ($1 million in 2021; $- million in 2020).
[3] | Interest expense excludes amounts which are included in the segments’ income ($4 million in 2021; $7 million in 2020).
[4] | See Note 2 – Charges and Credits.

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