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Restructuring and Reorganization Costs - Additional Information (Details) $ in Millions | 3 Months Ended
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Jun. 30, 2020 USD ($)
Restructuring Cost and Reserve [Line Items] |
Before tax charge | $ 1,015
After tax charge | 784
Operating Segments | Upstream | United States |
Restructuring Cost and Reserve [Line Items] |
Before tax charge | 157
After tax charge | 120
Operating Segments | Upstream | International |
Restructuring Cost and Reserve [Line Items] |
Before tax charge | 376
After tax charge | 296
Operating Segments | Downstream | United States |
Restructuring Cost and Reserve [Line Items] |
Before tax charge | 109
After tax charge | 82
Operating Segments | Downstream | International |
Restructuring Cost and Reserve [Line Items] |
Before tax charge | 78
After tax charge | 62
All Other |
Restructuring Cost and Reserve [Line Items] |
Before tax charge | 295
After tax charge | 224
Operating Expenses |
Restructuring Cost and Reserve [Line Items] |
Before tax charge | 895
Selling, General and Administrative Expenses |
Restructuring Cost and Reserve [Line Items] |
Before tax charge | $ 120

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