EARNINGS PER COMMON SHARE (Schedule of Weighted Average Number of Shares) (Details) - shares shares in Thousands	3 Months Ended					12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2015
Common Class A [Member]
Decrease in weighted average number of shares outstanding used to calculate basic net income per share amounts	(473,688)	(477,996)	(477,949)	(477,881)	(477,862)	(477,923)
Decrease in weighted average number of shares outstanding used to calculate diluted net income per shares amounts	(473,688)	(477,996)	(477,996)	(478,109)	(477,862)	(478,145)
Common Class B [Member]
Decrease in weighted average number of shares outstanding used to calculate basic and diluted net income per share amounts	(6,600)	(6,600)	(6,600)	(6,602)	(6,604)	(6,602)