EARNINGS PER SHARE - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Net Income Attributable to Common Shareholders	$ 265,319	$ 235,920	$ 713,123	$ 696,680
Weighted Average Common Shares Outstanding:
Basic (in shares)	317,787,836	317,452,212	317,696,823	317,296,107
Dilutive Effect (in shares)	789,243	953,057	814,786	1,099,935
Diluted (in shares)	318,577,079	318,405,269	318,511,609	318,396,042
Basic EPS (in dollars per share)	$ 0.83	$ 0.74	$ 2.24	$ 2.20
Diluted EPS (in dollars per share)	$ 0.83	$ 0.74	$ 2.24	$ 2.19