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Credit Losses (Details) - USD ($) $ in Millions | Jun. 30, 2020 | Dec. 31, 2019
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Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Accounts receivable allowance for credit losses | $ 7.6 | $ 3.6
Percent of accounts receivable not past due | 88.00% | 84.00%
Percent of accounts receivable past due | 12.00% | 16.00%
Accounts receivable, noncurrent, threshold period past due | 60 days | 60 days
Reserve for contract assets and sales-type leases | $ 3.0 |
Greater than 60 Days Past Due |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Percent of accounts receivable past due | 2.10% | 1.50%

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- Definition Threshold period for when accounts receivable, classified as noncurrent, is considered past due, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes threshold period past due to write off as uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919253-210447 + Details
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