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REVENUE RECOGNITION LONGTERM CONTRACTS AND DEFERRED AND UNBILLED REVENUE (Tables)
 9 Months Ended
Sep. 27, 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 millionsSeptember 27,
2020		December 31,
2019
Unbilled revenue$79 $68 
Deferred revenue, primarily extended warranty1,377 1,354