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Equity (Tables)
9 Months Ended
Sep. 30, 2012
Equity [Abstract]  
Redeemable Noncontrolling Interest
Changes to redeemable noncontrolling interest during the three months ended September 30, 2012 were as follows:
(in millions)
 
Opening redeemable noncontrolling interest
$
792

Net income attributable to noncontrolling interest
18

Distributions to noncontrolling interest
(15
)
Redemption value adjustment
15

Ending redeemable noncontrolling interest
$
810

Share repurchases
Share repurchases for the periods ended September 30 were as follows: 
(in millions, except average price)
Three Months
 
Nine Months
 
2012
 
2011
 
2012
 
2011
Total number of shares purchased — 2011 Repurchase Program 1, 2
5.9

 
8.3

 
6.8

 
8.3

Total number of shares purchased — 2007 stock repurchase program

 
0.7

 

 
8.4

Average price paid per share 2
$
50.35

 
$
39.40

 
$
50.35

 
$
39.20

Total cash utilized 2
$
295

 
$
355

 
$
295

 
$
655

1 
For the nine months ended September 30, 2012, includes shares received at the conclusion of the uncollared Accelerated Share Repurchase Agreement described in more detail below.
2 
In any period, cash used in financing activities related to common stock repurchased may differ from the comparable change in equity, reflecting timing differences between the recognition of share repurchase transactions and their settlement for cash. As such, in the third quarter of 2012, 0.5 million shares were repurchased for $25.6 million, which settled in October 2012. Excluding these 0.5 million shares, the average price paid per share was $49.99.