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
Jun. 30, 2021
Dec. 31, 2020
Cost    
Due in one year or less $ 34  
Due after one year through three years 306  
Due after three years through five years 1  
Due after five years 0  
Marketable Securities, Debt Maturities, Amortized Cost, Total 341  
Equity securities 2  
Total Amortized Cost 343 $ 398
Estimated Fair Value    
Due in one year or less 34  
Due after one year through three years 309  
Due after three years through five years 1  
Due after five years 0  
Marketable Securities, Debt Maturities, Fair Value, Total 344  
Equity securities 2  
Total Estimated Fair Value $ 346 $ 406