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v3.19.2

REVENUE (Tables) | 6 Months Ended
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Jun. 30, 2019
Revenue from Contract with Customer [Abstract] |
Contract with Customer, Asset and Liability | The table below summarizes our deferred revenue balances:
| (In Millions)
| Deferred Revenue (Current) |  | Deferred Revenue (Long-Term)
| 2019 |  | 2018 |  | 2019 |  | 2018
Opening balance as of January 1 | $ | 21.0 |  |  | $ | 23.8 |  |  | $ | 38.5 |  |  | $ | 51.4 |
Closing balance as of June 30 | 15.5 |  |  | 20.0 |  |  | 34.3 |  |  | 47.1 |
Decrease | $ | (5.5 | ) |  | $ | (3.8 | ) |  | $ | (4.2 | ) |  | $ | (4.3 | )

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045 + Details
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- References No definition available. + Details
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