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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Concentration of Credit Risk (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Jun. 30, 2016
Concentration of Credit Risk          
Net Sales $ 3,208 $ 3,124 $ 6,073 $ 5,959  
Accounts receivable, net 1,508   1,508   $ 1,258
Net Sales | Largest Customer          
Concentration of Credit Risk          
Net Sales $ 226 $ 253 $ 533 $ 592  
Concentration of credit risk (as a percent) 7.00% 8.00% 9.00% 10.00%  
Accounts Receivable | Largest Customer          
Concentration of Credit Risk          
Accounts receivable, net $ 146   $ 146   $ 164
Concentration of credit risk (as a percent)     10.00%   13.00%