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SHARE-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]  
Additional Information on RSUs
The following table provides additional information on RSUs for the last three fiscal years:
 
2019
 
2018
 
2017
Share-based compensation expense (in millions)
$
177

 
$
170

 
$
172

Weighted average grant-date fair value (per RSU)
$
117

 
$
132

 
$
85

Aggregate intrinsic value of distributed RSUs (in millions)
$
276

 
$
294

 
$
322
Changes in Outstanding RSU Grants
The following table presents the changes in our outstanding RSUs, including PSUs, during 2019 and the associated weighted average grant-date fair values:
 
Number of RSUs
(in millions)
 
Weighted Average 
Grant-Date
Fair Value
(per RSU)
Outstanding at year-end 2018
4.8

 
$
90

Granted
1.7

 
117

Distributed
(2.3
)
 
79

Forfeited
(0.1
)
 
112

Outstanding at year-end 2019
4.1

 
$
106