Quarterly report pursuant to Section 13 or 15(d)

CASH AND INVESTMENTS - Additional Information (Detail)

v3.19.3
CASH AND INVESTMENTS - Additional Information (Detail)
9 Months Ended
Sep. 30, 2019
USD ($)
Dec. 31, 2018
USD ($)
Sep. 30, 2018
USD ($)
Gain (Loss) on Securities [Line Items]      
Other than temporary impairment losses $ 0    
Investments and Restricted Cash 169,000,000 $ 170,000,000  
Fair value of unobservable assets measured on a recurring basis 2,000,000 2,000,000  
Transfer between level 1 and level 2 0   $ 0
cash held in escrow [Member]      
Gain (Loss) on Securities [Line Items]      
Restricted Cash and Cash Equivalents, Noncurrent 3,000,000 9,000,000  
Self-insurance requirements [Member]      
Gain (Loss) on Securities [Line Items]      
Investments and Restricted Cash 145,000,000 142,000,000  
Variable life insurance policy      
Gain (Loss) on Securities [Line Items]      
Investments and Restricted Cash $ 20,000,000 $ 19,000,000  
Discount Rate      
Gain (Loss) on Securities [Line Items]      
Investments, measurement input 0.0733 0.0816