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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands	1 Months Ended	11 Months Ended	12 Months Ended
	Jan. 31, 2015	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016
Cash paid / (received) during the year:
Interest on debt		$ 124,829	$ 253,708	$ 234,928
Income taxes		(53,486)	(14,163)	112,886
Noncash investing and financing activities:
Stock-based compensation		$ 0	0	$ 0
Predecessor
Cash paid / (received) during the year:
Interest on debt	$ 22,802
Income taxes	(1)
Noncash investing and financing activities:
Stock-based compensation	$ 1,550
Debt Securities
Cash paid / (received) during the year:
Interest on debt			58,700
Subordinated debentures
Cash paid / (received) during the year:
Interest on debt			20,200
Repurchase Agreements
Cash paid / (received) during the year:
Interest on debt			6,300
Other Obligations Nonrecourse Funding Obligations and Other Borrowings
Cash paid / (received) during the year:
Interest on debt			$ 168,500