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REDEEMABLE NONCONTROLLING INTERESTS IN EQUITY OF CONSOLIDATED SUBSIDIARIES - Changes in Redeemable Noncontrolling Interests (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Changes in redeemable noncontrolling interests in equity of consolidated subsidiaries    
Distributions paid to noncontrolling interests $ (82) $ (35)
Contributions from noncontrolling interests   2
Redeemable noncontrolling interests    
Changes in redeemable noncontrolling interests in equity of consolidated subsidiaries    
Balances at beginning of period 2,266 401
Net income 170 86
Distributions paid to noncontrolling interests (69) (30)
Purchase accounting adjustments (47)  
Purchases and sales of businesses and noncontrolling interests, net (13) 1,225
Balances at end of period $ 2,307 $ 1,682