Basis of Presentation (Tables)

6 Months Ended

Mar. 31, 2016

Basis of Presentation

Schedule of restatement of financials from adoption of accounting principle change

						After Voluntary
						Change in
						Accounting
	As Reported		Adjustments			Principle
	Three Months Ended March 31, 2015
	(in thousands)
Operating revenues	$	883,052	$	2,618		$	885,670
Operating costs, excluding depreciation	469,328		(2,229		)	467,099
Net income	149,537		4,006			153,543
Diluted earnings per common share	1.37		0.04			1.41

	Six Months Ended March 31, 2015
	(in thousands)
Operating revenues	$	1,939,637	$	(6,820	)	$	1,946,457
Operating costs, excluding depreciation	1,023,571		(2,991		)	1,026,562
Net income	352,579		4,572			357,151
Diluted earnings per common share	3.23		0.04			3.27

	September 30, 2015
	(in thousands)
Total assets	$	7,152,012	$	(4,770	)	$	7,147,242
Total liabilities	2,254,560		(3,164		)	2,251,396
Total shareholders’ equity	4,897,452		(1,606		)	4,895,846