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REVENUE RECOGNITION LONGTERM CONTRACTS AND DEFERRED AND UNBILLED REVENUE (Tables)
 6 Months Ended
Jun. 28, 2020
Revenue from Contract with Customer [Abstract]  
Contract with Customer, Contract Asset, Contract Liability, and Receivable
The following is a summary of our unbilled and deferred revenue and related activity:
In millionsJune 28,
2020		December 31,
2019
Unbilled revenue$76  $68  
Deferred revenue, primarily extended warranty1,352  1,354