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EARNINGS PER SHARE EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic EPS
Net income available for common stock	$ 319,976	$ 308,880	$ 311,688	$ 336,933	$ 292,613	$ 312,984	$ 280,773	$ 264,233	$ 1,277,477	$ 1,150,603	$ 387,074
Shares									413,560	411,485	297,477
Basic	$ 0.77	$ 0.75	$ 0.75	$ 0.82	$ 0.71	$ 0.76	$ 0.68	$ 0.65	$ 3.09	$ 2.80	$ 1.30
Diluted EPS
Effect of dilutive securities									$ 0	$ 0	$ 0
Effect of dilutive securities, number of shares									1,884	2,710	2,303
Net income available for common stock and common stock equivalents									$ 1,277,477	$ 1,150,603	$ 387,074
Shares									415,444	414,195	299,780
Diluted	$ 0.77	$ 0.74	$ 0.75	$ 0.81	$ 0.70	$ 0.75	$ 0.68	$ 0.64	$ 3.07	$ 2.78	$ 1.29

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Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise stock options, restrictive stock units (RSUs), convertible preferred stock of an employee stock ownership plan (ESOP), and other dilutive convertible securities.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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