INCOME TAXES (Tables)

12 Months Ended

Sep. 30, 2016

INCOME TAXES

Schedule of components of the provision for income taxes

	Years Ended September 30,
	2016			2015 (as adjusted)			2014 (as adjusted)
	(in thousands)
Current:
Federal	$	(86,010	)	$	84,229		$	323,386
Foreign		9,987			14,864			17,333
State		(3,742	)		10,881			21,197
		(79,765	)		109,974			361,916
Deferred:
Federal		58,136			165,491			28,183
Foreign		408			(34,410	)		(4,257	)
State		1,544			350			2,206
		60,088			131,431			26,132
Total provision	$	(19,677	)	$	241,405		$	388,048

Schedule of domestic and foreign income before income (loss) taxes

	Years Ended September 30,
	2016			2015 (as adjusted)			2014 (as adjusted)
	(in thousands)
Domestic	$	(49,636	)	$	675,425		$	1,061,019
Foreign		(23,031	)		(13,546	)		33,639
	$	(72,667	)	$	661,879		$	1,094,658

Schedule of components of net deferred tax liabilities

	September 30,
	2016			2015
	(in thousands)
Deferred tax liabilities:
Property, plant and equipment	$	1,411,139		$	1,335,680
Available-for-sale securities		25,470			33,187
Other		2,326			3,929
Total deferred tax liabilities		1,438,935			1,372,796
Deferred tax assets:
Pension reserves		8,330			3,405
Self-insurance reserves		15,282			14,317
Net operating loss and foreign tax credit carryforwards		71,778			56,494
Financial accruals		67,594			63,558
Other		4,952			12,283
Total deferred tax assets		167,936			150,057
Valuation allowance		(71,457	)		(55,971	)
Net deferred tax assets		96,479			94,086
Net deferred tax liabilities	$	1,342,456		$	1,278,710

Schedule of effective income tax rates as compared to the U.S. Federal income tax rate

	Years Ended September 30,
	2016			2015			2014
U.S. Federal income tax rate		35.0	%		35.0	%		35.0	%
Effect of foreign taxes		(13.8	)		(3.2	)		1.3
State income taxes, net of federal tax benefit		3.2			0.8			1.4
U.S. domestic production activities		(10.4	)		(1.2	)		(2.6	)
Other impact of foreign operations		14.7			4.5			0.6
Other		(1.6	)		0.6			(0.2	)
Effective income tax rate		27.1	%		36.5	%		35.5	%

Schedule of reconciliation of the change in the entity's gross unrecognized tax benefits

	September 30,
	2016			2015
	(in thousands)
Unrecognized tax benefits at October 1,	$	11,211		$	10,747
Gross decreases—tax positions in prior periods		—			(706	)
Gross increases—tax positions in prior periods		—			3,278
Gross decreases—current period effect of tax positions		(1,173	)		(821	)
Gross increases—current period effect of tax positions		969			—
Expiration of statute of limitations for assessments		(679	)		(956	)
Settlements		(777	)		(331	)
Unrecognized tax benefits at September 30,	$	9,551		$	11,211