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INVESTMENTS AND RESTRICTED CASH - Additional Information (Detail) - USD ($)
$ in Millions
9 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Gain (Loss) on Investments [Line Items]    
Restricted Cash and Investments, Noncurrent $ 485 $ 473
Fair Value Inputs, Discount Rate 7.49% 8.22%
cash held in escrow [Member]    
Gain (Loss) on Investments [Line Items]    
Restricted Cash and Cash Equivalents, Noncurrent $ 22 $ 12
Self-insurance requirements [Member]    
Gain (Loss) on Investments [Line Items]    
Restricted Cash and Investments, Noncurrent 444 442
Variable life insurance policy    
Gain (Loss) on Investments [Line Items]    
Restricted Cash and Investments, Noncurrent $ 19 $ 19