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Litigation and Contingencies - Additional Information (Detail) $ / shares in Units, shares in Millions, $ in Millions |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 04, 2019 USD ($) | Jul. 26, 2019 $ / shares | Jul. 19, 2019 USD ($) $ / shares | Jul. 06, 2017 USD ($) shareholder $ / shares shares | Jul. 06, 2017 USD ($) shares | Aug. 12, 2016 shareholder | Jul. 08, 2016 shareholder | Jun. 14, 2016 shareholder | Sep. 30, 2016 USD ($) | Dec. 31, 2016 Recipient | Sep. 30, 2020 USD ($) lawsuit entity Recipient alternative mi | Aug. 07, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2018 party | Oct. 03, 2016 shares
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of securities action lawsuits (in lawsuits) | lawsuit |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |
Number of dissenting shareholders (in shareholders) | shareholder |  |  |  | 11 |  | 2 | 2 | 10 |  |  |  |  |  |  |
Share conversion ratio upon merger |  |  |  | 86.20% | 86.20% |  |  |  |  |  |  |  |  |  |
Business acquisition, equity interest issued or issuable, number of shares (in shares) | shares |  |  |  | 6.6 |  |  |  |  |  |  |  |  |  |  |
Issue of common stock to settling petitioners |  |  |  | $ 162.0 | $ 162.0 |  |  |  |  |  |  |  |  |  |
Settlement amount |  |  | $ 140.0 |  |  |  |  |  |  |  |  |  |  |  |
Number Of PRPs (in recipients) | Recipient |  |  |  |  |  |  |  |  |  | 20 |  |  |  |  |
Litigation settlement, paid to other party | $ 177.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reduction in net revenue due to return authorization notice |  |  |  |  |  |  |  |  |  |  | $ 22.0 |  |  |  |
Inventory recall, recovery amount |  |  |  |  |  |  |  |  |  |  | 2.0 |  |  |  |
Environmental remediation expense |  |  |  |  |  |  |  |  |  |  | $ 43.0 |  |  |  |
Number of general notice letter recipients | entity |  |  |  |  |  |  |  |  |  |  | 100 |  |  |  |
Number of remediation alternatives | alternative |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |
Miles of river included in the remedial investigation and feasibility study | mi |  |  |  |  |  |  |  |  |  |  | 8.3 |  |  |  |
Standby letters of credit outstanding |  |  |  |  |  |  |  |  |  |  | $ 49.0 |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  |  |  |  |  |  |  |  |  | 1.0 |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  |  |  |  |  |  |  |  |  | $ 2.0 |  |  |  |
Jarden Acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares holding by dissenting shareholders (in shares) | shares |  |  |  | 2.9 | 2.9 |  |  |  |  |  |  |  |  |  | 10.6
Number of common stock transferred on settlement (in shares) | shares |  |  |  | 7.7 |  |  |  |  |  |  |  |  |  |  |
Litigation settlement, awarded to other party (in USD per share) | $ / shares |  | $ 59.21 | $ 48.31 | $ 21.00 |  |  |  |  |  |  |  |  |  |  |
Assumed acquisition price |  |  |  |  | $ 171.0 |  |  |  |  |  |  |  |  |  |
Operating cash flow related to business combination |  |  |  |  | $ 6.0 |  |  |  |  |  |  |  |  |  |
Lower Passaic River Matter |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of general notice letter recipients involved in remedial investigation and feasibility study | Recipient |  |  |  |  |  |  |  |  |  |  | 72 |  |  |  |
Loss contingency estimated period |  |  |  |  |  |  |  |  |  |  | 30 years |  |  |  |
Number of parties sued (in parties) | party |  |  |  |  |  |  |  |  |  |  |  |  |  | 120 |
Lower Passaic River Matter | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  |  |  |  |  |  |  |  |  | $ 315.0 |  |  |  |
Lower Passaic River Matter | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  |  |  |  |  |  |  |  |  | 3,200.0 |  |  |  |
Lower Passaic River Matter - Preferred Alternative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  |  |  |  |  |  |  |  |  | 1,700.0 |  |  |  |
Lower Passaic River Matter - Preferred Alternative Maintenance Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  |  |  |  |  |  |  |  |  | $ 2.0 |  |  |  |
Lower Passaic River Matter - Alternative Range from Participating Parties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Miles of river included in the remedial investigation and feasibility study | mi |  |  |  |  |  |  |  |  |  |  | 9 |  |  |  |
Lower Passaic River Matter - Alternative Range from Participating Parties | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  |  |  |  |  |  |  |  |  |  | $ 321.0 | $ 28.0 |  |
Lower Passaic River Matter - Alternative Range from Participating Parties | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, estimate of possible loss |  |  |  |  |  |  |  |  |  |  |  | $ 468.0 | $ 2,700.0 |  |
Lower Passaic River Matter - Selected Remedy for the Preferred Alternative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement amount |  |  |  |  |  |  |  |  | $ 0.3 |  | $ 1,400.0 |  |  |  |
Lower half of river |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Miles of river included in the remedial investigation and feasibility study | mi |  |  |  |  |  |  |  |  |  |  | 17 |  |  |  |

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