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Revenue and Contracts with Customers (Contract with Customer Asset and Liability) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Deferred costs associated with deferred revenue | $ 151.9 | $ 144.1
Provision for Loss on Contracts | 7.0 | 10.0
Provision for loss on contract change | (3.0) |
Provision for loss on contracts, noncurrent | 0.7 | 8.3
Provision for loss on contracts, noncurrent, change | (7.6) |
Deferred revenue | 281.7 | 243.0
Deferred revenue change | 38.7 |
Advances from customers | 1.5 | 23.3
Advances from customers change | (21.8) |
Advances from customers, noncurrent | 45.2 | $ 29.4
Advances from customers, noncurrent, change | $ 15.8 |

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- Definition Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Cumulative provision for contract losses not offset against related costs accumulated on the balance sheet. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68068069&loc=d3e57777-111642 + Details
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