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Impairment and Other Charges (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Long-lived asset impairments |  |  |  | $ 2,629,000,000 | $ 1,603,000,000 | $ 0
Inventory costs and write-downs |  |  |  | 505,000,000 | 458,000,000 | 0
Severance |  |  |  | 384,000,000 | 172,000,000 | 0
Joint ventures |  |  |  | 0 | 154,000,000 | 0
Other |  |  |  | 281,000,000 | 119,000,000 | 0
Total impairments and other charges | [1] |  |  | $ 3,799,000,000 | 2,506,000,000 | 265,000,000
Decline in WTI oil spot price |  | 25.00% |  | 31.00% |  |
Impairment of real estate properties |  |  |  | $ 616,000,000 |  |
Impairment of drilling-services equipment |  |  |  | 297,000,000 |  |
Impairment of hydraulic fracturing equipment |  |  |  | 1,000,000,000.0 | 759,000,000 |
Impairment of real estate facilities |  |  |  |  | 215,000,000 |
Impairment of legacy drilling equipment |  |  |  |  | 243,000,000 |
Impairment of intangible assets |  |  |  | 131,000,000 | 98,000,000 |
Impairment of right-of-use assets associated with operating leases |  |  |  | 191,000,000 | 139,000,000 |
Impairment of other fixed assets |  |  |  | $ 394,000,000 | 148,000,000 |
Decline in US average rig count |  |  |  | 54.00% |  |
Decline in International average rig count |  |  |  | 25.00% |  |
Decline in global rig count |  |  |  | 38.00% |  |
Impairments and other charges |  |  |  | $ 3,799,000,000 | 2,506,000,000 | 265,000,000
Impairment of hydraulic fracturing equipment |  |  |  | 1,000,000,000.0 | 759,000,000 |
Impairment of legacy drilling equipment |  |  |  |  | 243,000,000 |
Impairment of real estate facilities |  |  |  |  | 215,000,000 |
Impairment of right-of-use assets associated with operating leases |  |  |  | 191,000,000 | 139,000,000 |
Impairment of intangible assets |  |  |  | 131,000,000 | 98,000,000 |
Impairment of other fixed assets |  |  |  | 394,000,000 | 148,000,000 |
Arithmetic Average [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
WTI oil spot price |  | $ 43 |  | 39 |  |
Maximum |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
WTI oil spot price |  |  | $ 63 |  |  |
Minimum |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
WTI oil spot price |  | $ 48 | $ 21 |  |  |
Completion and Production |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Total impairments and other charges |  |  |  | 2,400,000,000 | 1,600,000,000 |
Drilling and Evaluation |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Total impairments and other charges |  |  |  | 1,400,000,000 | 849,000,000 |
VENEZUELA |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Venezuela investment write-down |  |  |  | $ 0 | $ 0 | 265,000,000
Total impairments and other charges | [1] |  |  |  |  | $ 265,000,000
UNITED STATES | Revenue Benchmark [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  | 38.00% | 51.00% | 58.00%
[1] | Impairments and other charges are as follows: -For the year ended December 31, 2020, amount includes approximately $2.4 billion attributable to Completion and Production, $1.4 billion attributable to Drilling and Evaluation, and $62 million attributable to Corporate and other. -For the year ended December 31, 2019, amount includes approximately $1.6 billion attributable to Completion and Production, $849 million attributable to Drilling and Evaluation, and $56 million attributable to Corporate and other. -For the years ended December 31, 2018, we recorded aggregate charges of $265 million to write-down our investment in Venezuela.

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