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Stockholders’ Equity (Tables)
3 Months Ended
Mar. 31, 2017
Equity [Abstract]  
Summary of stock repurchase activity under stock repurchase program
The stock repurchase activity under our stock repurchase program during the three months ended March 31, 2017 is summarized as follows (in millions, except per share amounts):
 
Shares Repurchased (1)
 
Average Price per Share (2)
 
Value of Shares Repurchased
 
Remaining Amount Authorized
Balance as of January 1, 2017
 
 
 
 
 
 
$
1,336

Repurchase of shares of common stock
10

 
$
33.65

 
350

 
(350
)
Balance as of March 31, 2017
 
 
 
 
 
 
$
986

 

(1)
These repurchased shares of common stock were recorded as treasury stock and were accounted for under the cost method. No repurchased shares of common stock have been retired.
(2)
Excludes broker commissions.