SIGNIFICANT ACCOUNTING POLICIES - Amortization Policy (Details)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Average annual rate of return, gross	7.00%
Average annual rate of return, net	4.70%
Future annual rate of return, gross, maximum	15.00%
Future annual rate of return, net, maximum	12.70%
Future annual rate of return, gross, minimum	0.00%
Future annual rate of return, net, minimum	2.30%
Future annual rate of return assumption duration maximum	5 years
Assumed average investment yield excluding policy loans, high end	4.50%
Assumed average investment yield excluding policy loans, low end	4.30%