Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Summarized Activity Related to Unrecognized Tax Benefits (Detail)

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INCOME TAXES - Summarized Activity Related to Unrecognized Tax Benefits (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Tax      
Reconciliation of Unrecognized Tax Benefits [Roll Forward]      
Beginning Balance $ 172 $ 167 $ 160
Additions for tax positions of the current year 61 6 47
Additions for tax positions of prior years 154 51 7
Reductions for tax positions of prior years for:      
Changes based on facts and circumstances (54) (45) (43)
Settlements during the period 0 (3) (1)
Lapses of applicable statute of limitations 0 (4) (3)
Ending Balance 333 172 167
Interest      
Reconciliation of Unrecognized Tax Benefits [Roll Forward]      
Beginning Balance 52 44 43
Additions for tax positions of the current year 0 0 0
Additions for tax positions of prior years 34 13 10
Reductions for tax positions of prior years for:      
Changes based on facts and circumstances (24) (4) (8)
Settlements during the period (1) (1) (1)
Lapses of applicable statute of limitations 0 0 0
Ending Balance 61 52 44
Penalties      
Reconciliation of Unrecognized Tax Benefits [Roll Forward]      
Beginning Balance 4 5 9
Additions for tax positions of the current year 0 0 1
Additions for tax positions of prior years 2 0 0
Reductions for tax positions of prior years for:      
Changes based on facts and circumstances (2) (1) (5)
Settlements during the period 0 0 0
Lapses of applicable statute of limitations 0 0 0
Ending Balance $ 4 $ 4 $ 5