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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Schedule of New Accounting Pronouncements and Changes in Accounting Principles (Tables)
 12 Months Ended
Dec. 31, 2017
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Abstract]  
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]
Summary of Changes to the Consolidated Statements of Cash Flows
2016
2015
In millions
As Filed
Updated
As Filed
Updated
Operating Activities
 
 
 
 
Excess tax benefits from share-based payment arrangements
$
(57
)
$
—

$
(41
)
$
—

Other assets and liabilities, net
$
(34
)
$
31

$
878

$
928

Cash provided by operating activities
$
5,478

$
5,600

$
7,516

$
7,607

Financing Activities
 
 
 
 
Excess tax benefits from share-based payment arrangements
$
57

$
—

$
41

$
—

Employee taxes paid for share-based payment arrangements
$
—

$
(65
)
$
—

$
(50
)
Cash used for financing activities
$
(3,892
)
$
(4,014
)
$
(3,041
)
$
(3,132
)