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Contingencies - Additional Information (Detail) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) Project | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |
Environmental remediation reserve balance, current | $ 36 |  | $ 36 |  | $ 29 |
Liabilities incurred |  |  | 4 | $ 2 | 7 |
Payments related to remediation expenses applied against the reserve | 6 | $ 6 | 11 | 9 | 19 |
Reversals of previously recorded liabilities | 10 |  | 17 |  |  |
Decrease in reserves due to effects of foreign currency translation |  |  |  | $ 6 |  |
Active or future remediation for significant sites | 241 |  | 241 |  | 259 |
Accrued environmental reserves | 298 |  | $ 298 |  | 322 | $ 335
Massena, New York [Member] | Minimum [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Environmental remediation work completion period |  |  | 4 years |  |  |
Massena, New York [Member] | Maximum [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Environmental remediation work completion period |  |  | 8 years |  |  |
Sherwin, Texas [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Beginning of expected term for reuse of residue bed |  |  | 8 years |  |  |
Ending of expected term for reuse of residue bed |  |  | 10 years |  |  |
Other Sites [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of remediation projects | Project |  |  | 35 |  |  |
Accrued environmental reserves | 57 |  | $ 57 |  | $ 63 |
Closed Suriname Site [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Reversals of previously recorded liabilities | 5 |  | 5 |  |  |
Closed Site in Brazil [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Reversals of previously recorded liabilities | $ 5 |  | 5 |  |  |
Closed Tennessee Site [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Reversals of previously recorded liabilities |  |  | $ 7 |  |  |

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