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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts |
Description |  | Balance at Beginning of Period |  | Charged (Credited) to Costs and Expenses |  | Charged to Other Accounts |  | Deductions/Write-offs |  | Balance at End of Period
Allowance for deferred tax assets |  |  |  |  |  |  |  |  |  |
Year ended December 31, 2018 |  | $ | 462.3 |  |  | $ | 4.6 |  |  | $ | 15.8 |  | (1) | $ | (135.2) |  | (2) | $ | 347.5 |
Year ended December 31, 2019 |  | 347.5 |  |  | 5.0 |  |  | 16.6 |  | (3) | (11.2) |  | (4) | 357.9 |
Year ended December 31, 2020 |  | 357.9 |  |  | (43.1) |  | (5) | 11.0 |  | (1) | (75.9) |  | (2) | 249.9 |
______________________ (1)Primarily represents the effects of cumulative translation adjustments. (2)Primarily relates to the expiration of Japan net operating losses. See Note 16: "Income Taxes." (3)Primarily represents the effects of cumulative translation adjustments and includes $14.0 million of additional allowance for deferred tax assets arising from the Quantenna acquisition. (4)Primarily relates to the write-off of Hong Kong net operating losses upon the liquidation of Sanyo Semiconductor (H.K.) Co., Ltd. as well as the expiration of Japan net operating losses. (5)Primarily relates to the release of state valuation as a result of the Domestication of certain foreign subsidiaries. See Note 16: "Income Taxes."

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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