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1. Basis of Presentation and Use of Estimates Basis of Presentation and Use of Estimates (Tables) | 6 Months Ended
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Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Revenue from External Customers by Geographic Areas [Table Text Block] | The following table presents our revenues disaggregated by geographic region based primarily on the location of the use of the product or service (in millions):
|  | Three Months Ended |  | Six Months Ended
|  | June 30, |  | June 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
Europe |  | $ | 229.1 |  |  | $ | 174.0 |  |  | $ | 476.7 |  |  | $ | 369.7 |
Asia |  | 172.1 |  |  | 129.0 |  |  | 341.0 |  |  | 240.4 |
United States |  | 274.6 |  |  | 205.4 |  |  | 546.0 |  |  | 434.9 |
Other (primarily Canada and Latin America) |  | 40.1 |  |  | 28.5 |  |  | 79.0 |  |  | 63.5 |
Total net sales |  | $ | 715.9 |  |  | $ | 536.9 |  |  | $ | 1,442.7 |  |  | $ | 1,108.5 |
Schedule of Product Warranty Liability [Table Text Block] | Warranty liabilities are included in Other current liabilities and Other long-term liabilities in the condensed consolidated balance sheets. Change in our warranty liability for the six-month period ended June 30, 2021 and 2020 were as follows (in millions):
| Six Months Ended
| June 30,
| 2021 | 2020
Balance at beginning of period | $ | 9.8 |  | $ | 9.0 |
Provision for warranty | 5.9 |  | 2.9 |
Actual warranty costs | (5.2) |  | (4.0) |
Balance at end of period | $ | 10.5 |  | $ | 7.9 |
Accounts Receivable, Allowance for Credit Loss [Table Text Block] | Changes in our allowance for doubtful accounts were as follows (in millions):
| Six Months Ended
| June 30,
| 2021 | 2020
Balance at beginning of period | $ | 19.8 |  | $ | 20.2 |
Provision for expected credit losses | 0.6 |  | 1.2 |
Write-offs charged against the allowance | (3.1) |  | (1.2) |
Recoveries collected | — |  | 0.1 |
Balance at end of period | $ | 17.3 |  | $ | 20.3 |

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- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=123368208&loc=d3e12565-110249 + Details
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