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Per Share Data (Tables)
 3 Months Ended
Mar. 31, 2013
Per Share Data [Abstract]  
Diluted EPS Calculation Continuing Operations
Basic and Diluted EPS Calculation - Continuing Operations
Three Months Ended
March 31,
 
(In millions, except per share figures)
2013

 
2012

 
Net income from continuing operations
$
412

 
$
354

 
Less: Net income attributable to non-controlling interests
11

 
7

 
 
401

 
347

 
Basic weighted average common shares outstanding
548

 
542

 
Dilutive effect of potentially issuable common shares
9

 
9

 
Diluted weighted average common shares outstanding
557

 
551

 
Average stock price used to calculate common stock equivalents
$
36.21

 
$
31.95