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ACCUMULATED OTHER COMPREHENSIVE LOSS
 3 Months Ended
Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
ACCUMULATED OTHER COMPREHENSIVE LOSS
ACCUMULATED OTHER COMPREHENSIVE LOSS
The following table provides an analysis of the changes in accumulated other comprehensive loss for the three-month periods ended March 31, 2017 and 2016:

Accumulated Other Comprehensive Loss
Three Months Ended
In millions
Mar 31, 2017

 
Mar 31, 2016

Cumulative Translation Adjustments at beginning of year
$
(62
)
 
$
(61
)
Translation adjustments
1

 
—

Balance at end of period
$
(61
)
 
$
(61
)
Pension and Other Postretirement Benefit Plans at beginning of year
$
(1,258
)
 
$
(1,167
)
Adjustments to pension and other postretirement benefit plans (net of tax of $8, $6) (1) (2)
12

 
11

Balance at end of period
$
(1,246
)
 
$
(1,156
)
Total Accumulated Other Comprehensive Loss
$
(1,307
)
 
$
(1,217
)
(1)
Included in "Net periodic benefit cost." See Note 7 for additional information.
(2)
Tax amounts are included in "Provision for income taxes" in the consolidated statements of income.