REVENUE RECOGNITION LONG-TERM CONTRACTS AND DEFERRED AND UNBILLED REVENUE REVENUE RECOGNITION LONG-TERM CONTRAACTS AND DEFERRED AND UNBILLED REVENUE (Tables)
|12 Months Ended|
Dec. 31, 2019
|Revenue from Contract with Customer [Abstract]|
|Contract with Customer, Asset and Liability||
The following is a summary of our unbilled and deferred revenue and related activity:
Tabular disclosure of contract balances and changes in contract balances.
Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef