Annual report pursuant to Section 13 and 15(d)

INVESTMENTS AND RESTRICTED CASH - Summary of Marketable Securities (Detail)

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INVESTMENTS AND RESTRICTED CASH - Summary of Marketable Securities (Detail) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]    
Debt Securities, Trading, Amortized Cost $ 114 $ 139
Trading Securities, Gross Unrealized Gain 0 0
Trading Securities, Gross Unrealized Loss 0 0
Debt Securities, Trading, and Equity Securities, FV-NI 114 139
Available-for-sale Securities, Amortized Cost Basis 383 674
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax 6 1
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax 0 (4)
Available-for-sale Securities, Current 389 671
Marketable Securities, Amortized Cost, Total 497 813
Marketable Securities, Gross Unrealized Gain 6 1
Marketable Securities, Gross Unrealized Loss 0 (4)
Marketable securities 503 810
U.S. government and agency debt securities    
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale Securities, Amortized Cost Basis 191 297
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax 2 1
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax 0 (1)
Available-for-sale Securities, Current 193 297
Mortgage and asset-backed debt securities    
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale Securities, Amortized Cost Basis 46 82
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax 1 0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax 0 (1)
Available-for-sale Securities, Current 47 81
Corporate debt securities    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities, Trading, Amortized Cost 112 137
Trading Securities, Gross Unrealized Gain 0 0
Trading Securities, Gross Unrealized Loss 0 0
Debt Securities, Trading, and Equity Securities, FV-NI 112 137
Available-for-sale Securities, Amortized Cost Basis 130 275
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax 3 0
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax 0 (2)
Available-for-sale Securities, Current 133 273
Equity securities    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities, Trading, Amortized Cost 2 2
Debt Securities, Trading, and Equity Securities, FV-NI 2 2
Non-U.S. government debt securities    
Debt Securities, Available-for-sale [Line Items]    
Available-for-sale Securities, Amortized Cost Basis 16 20
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 $ 16 $ 20