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Goodwill and Other Intangible Assets - Net - Other Intangible Assets, Net (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | $ 70.4 | $ 71.8
Accumulated Amortization | 43.3 | 40.7
Total | $ 27.1 | $ 31.1
Developed Technologies [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted average useful life | 4 years | 4 years
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | $ 48.8 | $ 50.2
Accumulated Amortization | 25.8 | 24.6
Total | $ 23.0 | $ 25.6
Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted average useful life | 4 years 1 month 6 days | 4 years 1 month 6 days
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | $ 21.6 | $ 21.6
Accumulated Amortization | 17.5 | 16.1
Total | $ 4.1 | $ 5.5

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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