Quarterly report pursuant to Section 13 or 15(d)

CASH AND INVESTMENTS - Amortized Cost and Estimated Fair Value of Marketable Securities by Contractual Maturity (Detail)

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CASH AND INVESTMENTS - Amortized Cost and Estimated Fair Value of Marketable Securities by Contractual Maturity (Detail) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Cost    
Due in one year or less $ 125  
Due after one year through three years 323  
Due after three years through five years 6  
Due after five years 41  
Marketable Securities, Debt Maturities, Amortized Cost, Total 495  
Equity securities 2  
Total Amortized Cost 497 $ 497
Estimated Fair Value    
Due in one year or less 124  
Due after one year through three years 330  
Due after three years through five years 6  
Due after five years 43  
Marketable Securities, Debt Maturities, Fair Value, Total 503  
Equity securities 2  
Total Estimated Fair Value $ 505 $ 503