Quarterly Financial Information

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information (unaudited)

The following table presents the unaudited quarterly results of consolidated operations for 2015, 2014 and 2013.



	Quarters Ended
(dollars in thousands, except per share amounts)	Mar. 31		June 30			Sept. 30			Dec. 31
2015
Operating revenues	$	1,302,154	$	1,304,605		$	1,342,764		$	1,420,460
Net income	194,006		92,453			104,410			198,273
Net income to shareholders	190,992		91,369			102,519			197,892
Comprehensive income (loss) to shareholders	281,807		(132,925		)	(51,143		)	134,984
Net income per share:
Basic	$	13.57	$	6.76		$	7.43		$	14.23
Diluted	13.49		6.72			7.39			14.14
Common stock price ranges:
High	$	783.50	$	821.00		$	898.08		$	937.91
Low	660.05		736.96			775.00			791.97
2014
Operating revenues	$	1,239,655	$	1,258,971		$	1,299,286		$	1,335,755
Net income	87,501		41,141			76,824			118,222
Net income to shareholders	87,716		40,068			75,803			117,595
Comprehensive income to shareholders	230,273		250,588			36,502			418,571
Net income per share:
Basic	$	6.28	$	2.67		$	5.33		$	8.10
Diluted	6.25		2.66			5.30			8.05
Common stock price ranges:
High	$	596.87	$	655.75		$	666.00		$	707.36
Low	527.17		593.76			623.90			632.65
2013
Operating revenues	$	819,864	$	1,031,769		$	1,191,665		$	1,279,785
Net income	89,263		28,676			66,967			98,939
Net income to shareholders	88,902		27,756			65,599			98,764
Comprehensive income (loss) to shareholders	257,684		(149,054		)	144,409			206,450
Net income per share:
Basic	$	9.53	$	2.24		$	4.69		$	6.98
Diluted	9.50		2.24			4.67			6.95
Common stock price ranges:
High	$	510.05	$	546.94		$	549.09		$	582.59
Low	434.98		501.76			506.64			511.06