Annual report pursuant to Section 13 and 15(d)

REVENUE RECOGNITION LONG-TERM CONTRACTS AND DEFERRED AND UNBILLED REVENUE REVENUE RECOGNITION LONG-TERM CONTRAACTS AND DEFERRED AND UNBILLED REVENUE (Tables)

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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, 2020
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:
Years ended December 31,
In millions 2020 2019
Unbilled revenue $ 114  $ 68 
Deferred revenue, primarily extended warranty 1,531  1,354