EARNINGS PER COMMON SHARE (Antidilutive) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
AOG
Earnings per common unit
Antidilutive securities excluded from calculation of earnings per common unit (in units)	120,231,237	130,249,329	124,211,007	130,325,826
Options
Earnings per common unit
Antidilutive securities excluded from calculation of earnings per common unit (in units)	19,111,390	21,155,026	19,471,589	21,244,858
Restricted units
Earnings per common unit
Antidilutive securities excluded from calculation of earnings per common unit (in units)	15,271,381	39,082	15,811,964	14,463,590