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Equity (Tables)
9 Months Ended
Sep. 30, 2019
Equity [Abstract]  
Share Repurchases
Total share repurchases were as follows for the respective periods:
 
Three Months Ended 
September 30,
 
Nine Months Ended 
September 30,
(In millions, except per share data)
2019
 
2018
 
2019
 
2018
Number of shares repurchased
10

 
5

 
33

 
36

Cash paid for shares repurchased
$
500

 
$
400

 
$
1,885

 
$
2,612

Average cost per share
$
53.82

 
$
73.03

 
$
58.75

 
$
71.80