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REVENUE RECOGNITION SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES REVENUE RECOGNITION SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 3 Months Ended
Apr. 01, 2018
Accounting Policies [Abstract]  
Contract with Customer, Asset and Liability The following is a summary of our unbilled and deferred revenue and related activity:
In millions
 
April 1,
2018
 
January 1,
2018
Unbilled revenue
 
$
49

 
$
6

Deferred revenue, primarily extended warranty
 
1,085

 
1,052

Revenue recognized (1)
 
(128
)
 
—

____________________________________
(1) Relates to revenue recognized in the period from