Quarterly report pursuant to Section 13 or 15(d)

INVESTMENTS AND RESTRICTED CASH - Additional Information (Detail)

v3.10.0.1
INVESTMENTS AND RESTRICTED CASH - Additional Information (Detail) - USD ($)
6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Gain (Loss) on Investments [Line Items]      
Non-Current Investments and Restricted Cash $ 306,000,000   $ 483,000,000
Fair Value Inputs, Discount Rate 8.11% 7.56%  
Fair value of unobservable assets measured on a recurring basis $ 2,000,000   6,000,000
Transfer between level 1 and level 2 0 $ 0  
cash held in escrow [Member]      
Gain (Loss) on Investments [Line Items]      
Restricted Cash and Cash Equivalents, Noncurrent 10,000,000   15,000,000
Self-insurance requirements [Member]      
Gain (Loss) on Investments [Line Items]      
Non-Current Investments and Restricted Cash 277,000,000   449,000,000
Variable life insurance policy      
Gain (Loss) on Investments [Line Items]      
Non-Current Investments and Restricted Cash $ 19,000,000   $ 19,000,000