Business Acquisitions - Schedule of Assets and Liabilities Assumed (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Sep. 30, 2020 | Jan. 31, 2020 | Nov. 21, 2019 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] | | | | |
Goodwill | $ 1,185.9 | $ 1,137.8 | | |
Molding Technology Solutions | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents | 125.8 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables | 133.1 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory | 287.7 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | 69.2 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | 233.9 | | | |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Operating Lease Right-Of-Use Assets | 41.3 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | 815 | | | $ 815 |
Goodwill | 734.2 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets | 21 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total | 2,461.2 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract] | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable | 110.2 | | | |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Revenue From Contract From Customer Liability | 32.7 | | | |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Compensation | 20.8 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | 89.4 | | | |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Pension And Postretirement Healthcare | 29.4 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities | 139 | | | |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Operating Lease, Liability, Noncurrent | 31.2 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other | 14.2 | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Total | 466.9 | | | |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total | $ 1,994.3 | | | |
Molding Technology Solutions | Previously Reported | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents | | | | 125.8 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables | | | | 135.5 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory | | | | 288.7 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | | | | 64.3 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | | | | 262.9 |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Operating Lease Right-Of-Use Assets | | | | 41.3 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | | | | 865 |
Goodwill | | | | 666.5 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets | | | | 22.6 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total | | | | 2,472.6 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract] | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable | | | | 110.2 |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Revenue From Contract From Customer Liability | | | | 32.7 |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Compensation | | | | 23.2 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | | | | 72.2 |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Pension And Postretirement Healthcare | | | | 29.4 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities | | | | 166.3 |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Operating Lease, Liability, Noncurrent | | | | 31.2 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other | | | | 13.1 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Total | | | | 478.3 |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total | | | | $ 1,994.3 |
Molding Technology Solutions | Restatement Adjustment [Member] | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents | | | $ 0 | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables | | | (2.4) | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory | | | (1) | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets | | | 4.9 | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment | | | (29) | |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Operating Lease Right-Of-Use Assets | | | 0 | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | | | (50) | |
Goodwill | | | 67.7 | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets | | | (1.6) | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total | | | (11.4) | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract] | | | | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable | | | 0 | |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Revenue From Contract From Customer Liability | | | 0 | |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Compensation | | | (2.4) | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other | | | 17.2 | |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Pension And Postretirement Healthcare | | | 0 | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities | | | (27.3) | |
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Operating Lease, Liability, Noncurrent | | | 0 | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other | | | 1.1 | |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Total | | | (11.4) | |
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total | | | $ 0 | |