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REVENUE (Tables)
 12 Months Ended
Dec. 31, 2018
Revenue from Contract with Customer [Abstract]  
Contract with Customer
The following table summarizes the contract balances at December 31, 2018 and 2017:

Contract Balances
Dec 31, 2018
Topic 606 Adjustments Jan 1, 2018
Dec 31, 2017
In millions
Accounts and notes receivable - Trade
$
8,246

$
—

$
7,338

Contract assets - current 1
$
37

$
18

$
—

Contract assets - noncurrent 2
$
47

$
43

$
—

Contract liabilities - current 3
$
165

$
50

$
117

Contract liabilities - noncurrent 4
$
1,390

$
117

$
1,365

1. Included in "Other current assets" in the consolidated balance sheets.
2. Included in "Deferred charges and other assets" in the consolidated balance sheets.
3. Included in "Accrued and other current liabilities" in the consolidated balance sheets.
4. Included in "Other noncurrent obligations" in the consolidated balance sheets.