SIGNIFICANT ACCOUNTING POLICIES SIGNIFICANT ACCOUNTING POLICIES - Intangible Assets Other Than Goodwill (Details) (Details) - Private Equity	12 Months Ended
	Dec. 31, 2020
Water and sewage concession agreements [Member]
Disclosure of detailed information about intangible assets [line items]
Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period	40 years
Brand names [member]
Disclosure of detailed information about intangible assets [line items]
Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period	20 years
Computer software [member]
Disclosure of detailed information about intangible assets [line items]
Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period	10 years
Customer-related intangible assets [member]
Disclosure of detailed information about intangible assets [line items]
Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period	30 years
Value of insurance contracts acquired [Domain]
Disclosure of detailed information about intangible assets [line items]
Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period	15 years
Patents and Trademarks
Disclosure of detailed information about intangible assets [line items]
Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period	40 years
Proprietary Technology
Disclosure of detailed information about intangible assets [line items]
Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period	20 years
Product Development Costs
Disclosure of detailed information about intangible assets [line items]
Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period	5 years
Distribution networks [Member]
Disclosure of detailed information about intangible assets [line items]
Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period	25 years
Loyalty program [Member]
Disclosure of detailed information about intangible assets [line items]
Useful Lives Or Amortisation Rates, Intangible Assets Other Than Goodwill, Period	15 years