Quarterly Results of Operations (Tables)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)

Years Ended December 31,
(in thousands, except per share data)
2013	First		Second			Third		Fourth
Total Revenues	$	2,601,102	$	2,590,642		$	2,389,815	$	2,736,794
Total benefits and expenses	2,322,275		2,665,400			2,188,120		2,507,304
Income before income taxes	278,827		(74,758		)	201,695		229,490
Net Income	185,535		(49,612		)	137,955		144,959
Earnings Per Share:
Basic earnings per share	$	2.51	$	(0.69	)	$	1.95	$	2.05
Diluted earnings per share	2.49		(0.69		)	1.93		2.03
Dividends declared per share	$	0.24	$	0.24		$	0.30	$	0.30
Market price of common stock
Quarter end	$	59.67	$	69.11		$	66.99	$	77.41
Common stock price, high	61.86		69.28			73.32		77.55
Common stock price, low	54.33		57.14			63.95		66.99
Total outstanding common shares - end of period	73,301		70,968			70,543		70,768
2012	First		Second			Third		Fourth
Total Revenues	$	2,292,975	$	2,375,753		$	2,449,081	$	2,723,102
Total benefits and expenses	2,112,212		2,159,861			2,247,602		2,402,013
Income before income taxes	180,763		215,892			201,479		321,089
Net Income	123,318		141,111			144,475		222,989
Earnings Per Share:
Basic earnings per share	$	1.68	$	1.91		$	1.96	$	3.02
Diluted earnings per share	1.67		1.91			1.95		3.00
Dividends declared per share	$	0.18	$	0.18		$	0.24	$	0.24
Market price of common stock
Quarter end	$	59.47	$	53.21		$	57.87	$	53.52
Common stock price, high	59.97		59.87			60.69		60.20
Common stock price, low	51.19		48.80			52.75		48.36
Total outstanding common shares—end of period	73,712		73,722			73,852		73,927