Quarterly report pursuant to Section 13 or 15(d)

CASH AND INVESTMENTS - Summary of Marketable Securities (Detail)

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CASH AND INVESTMENTS - Summary of Marketable Securities (Detail) - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Schedule of Marketable Securities [Line Items]    
Debt Securities, Trading, Amortized Cost $ 2 $ 2
Trading Securities, Gross Unrealized Gain 0 0
Trading Securities, Gross Unrealized Loss 0 0
Debt Securities, Trading, and Equity Securities, FV-NI 2 2
Available-for-sale Securities, Amortized Cost Basis 341 396
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax 3 8
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax 0 0
Available-for-sale Securities, Current 344 404
Total Amortized Cost 343 398
Marketable Securities, Gross Unrealized Gain 3 8
Marketable Securities, Gross Unrealized Loss 0 0
Total Estimated Fair Value 346 406
Equity securities    
Schedule of Marketable Securities [Line Items]    
Debt Securities, Trading, Amortized Cost 2 2
Trading Securities, Gross Unrealized Gain 0 0
Trading Securities, Gross Unrealized Loss 0 0
Debt Securities, Trading, and Equity Securities, FV-NI 2 2
U.S. government and agency debt securities    
Schedule of Marketable Securities [Line Items]    
Available-for-sale Securities, Amortized Cost Basis 208 181
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax 1 3
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax 0 0
Available-for-sale Securities, Current 209 184
Mortgage and asset-backed debt securities    
Schedule of Marketable Securities [Line Items]    
Available-for-sale Securities, Amortized Cost Basis 1 30
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax 0 1
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax 0 0
Available-for-sale Securities, Current 1 31
Corporate debt securities    
Schedule of Marketable Securities [Line Items]    
Available-for-sale Securities, Amortized Cost Basis 127 174
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax 2 4
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax 0 0
Available-for-sale Securities, Current 129 178
U.S. state and local municipal debt securities    
Schedule of Marketable Securities [Line Items]    
Available-for-sale Securities, Amortized Cost Basis 2 0
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax 0 0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax 0 0
Available-for-sale Securities, Current 2 0
Non-U.S. government debt securities    
Schedule of Marketable Securities [Line Items]    
Available-for-sale Securities, Amortized Cost Basis 3 11
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax 0 0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax 0 0
Available-for-sale Securities, Current $ 3 $ 11