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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions | Oct. 22, 2019 | Jun. 19, 2019 | Sep. 19, 2016 | Dec. 31, 2019 | Apr. 22, 2019
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Loss Contingencies [Line Items] |  |  |  |  |
Availability under senior revolving credit facility |  |  |  | $ 15.0 |
Outstanding guarantees and letters of credit |  |  |  | 11.7 |
Guarantees related subsidiaries' finance lease obligations, and line of credit |  |  |  | 1.8 |
Fairchild |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Maximum remediation cost recoveries receivable |  |  |  | 150.0 |
Power Integrations, Inc. |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Cash paid for legal settlements | $ 175.0 |  |  |  |
Letter of Credit | Senior Revolving Credit Facility |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Credit commitment outstanding |  |  |  | $ 1.0 |
Fairchild |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Business acquisition, maximum indemnification period |  |  | 6 years |  |
Quantenna |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Business acquisition, maximum indemnification period |  | 6 years |  |  |
GFUS |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Commitments related to pending acquisition |  |  |  |  | $ 330.0

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