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FINANCIAL ASSETS (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2019
Current    
Marketable securities $ 265 $ 734
Restricted cash 376 172
Derivative contracts 223 176
Loans and notes receivable 22 66
Total current 886 1,148
Non-current    
Marketable securities 1 3,435
Restricted cash 32 201
Derivative contracts 20 62
Loans and notes receivable 150 309
Other financial assets 280 1,088
Total non-current 483 $ 5,095
Genworth MI Canada Inc.    
Disclosure of financial assets [line items]    
Increase (decrease) in financial assets $ 4,767