EARNINGS PER SHARE (Antidilutive) (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
AOG
Earnings per common unit
Antidilutive securities excluded from calculation of earnings per common unit (in units)	116,802,160	121,296,583	130,244,013
Options
Earnings per common unit
Antidilutive securities excluded from calculation of earnings per common unit (in units)	0	19,194,615	21,001,916
Restricted units
Earnings per common unit
Antidilutive securities excluded from calculation of earnings per common unit (in units)	82	15,970,004	14,105,481