LOAN PORTFOLIO - Loan Portfolio Held for Investment (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2016	Jun. 30, 2015	Dec. 31, 2015
Financial Information [Line Items]
Classified And Non Performing Loans Sold	$ 16.3	$ 147.5
Commercial Loans Collaterized By Real Estate	$ 853.9		$ 973.2