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LEGAL PROCEEDINGS - Securities and RICO Class Actions and Related Matters (Details)
$ in Millions, $ in Millions
1 Months Ended 4 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
Jul. 20, 2021
USD ($)
insured
Aug. 04, 2020
CAD ($)
Dec. 16, 2019
USD ($)
Dec. 07, 2017
insurance_policy_period
Oct. 31, 2015
case
Sep. 16, 2016
action
Jun. 30, 2022
USD ($)
group
action
case
Dec. 31, 2015
case
Mar. 17, 2021
entity
Feb. 15, 2019
entity
US Securities Litigation | New Jersey                      
Loss Contingencies [Line Items]                      
Number of groups of investors filing action | group               37      
Number of claims dismissed | case               16      
Number of groups of investors filing action, remain pending | group               21      
US Securities Litigation | New Jersey | Unfavorable Regulatory Action                      
Loss Contingencies [Line Items]                      
Number of suits filed | case           4          
US Securities Litigation | Settled Litigation | New Jersey                      
Loss Contingencies [Line Items]                      
Settlement, agreed to pay       $ 1,210       $ 1,210      
US Securities Litigation | Settled Litigation | New Jersey | Restricted Cash And Other Settlement Deposits, Current                      
Loss Contingencies [Line Items]                      
Settlement, agreed to pay $ 1,210                    
Canadian Securities Litigation | Canada                      
Loss Contingencies [Line Items]                      
Number of suits filed | case                 6    
Canadian Securities Litigation | Canada | Violation of Canadian Provincial Securities Legislation                      
Loss Contingencies [Line Items]                      
Number of suits filed but not yet served | action               2      
Number of entities, exercised opt-out right, pursuing action | entity                   4 1
Canadian Securities Litigation | Settled Litigation | Canada | Violation of Canadian Provincial Securities Legislation                      
Loss Contingencies [Line Items]                      
Settlement, agreed to pay     $ 94                
RICO Class Actions | New Jersey | Unfavorable Regulatory Action                      
Loss Contingencies [Line Items]                      
Number of suits filed | action             3        
Insurance Coverage Lawsuit                      
Loss Contingencies [Line Items]                      
Number of distinct insurance policy periods | insurance_policy_period         2            
Insurance Coverage Lawsuit | Settled Litigation                      
Loss Contingencies [Line Items]                      
Settlement agreements, number of insurers | insured   2                  
Aggregate amount to be received   $ 213