CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified		Total	Preferred stock	Common stock	Additional paid-in capital	Accumulated other comprehensive income (loss)	Retained earnings	Treasury shares
Balance at Dec. 31, 2012		$ 2,505,318	$ 169,920	$ 53,886	$ 490,339	$ 86,582	$ 1,738,957	$ (34,366)
Balance (in shares) at Dec. 31, 2012				53,885,886
Increase (Decrease) in Stockholders' Equity
Net income	[1]	111,264					111,264
Other comprehensive income (loss), net of tax		(79,997)				(79,997)
Issuance of shares under share-based compensation plans		14,749		388	5,291			9,070
Issuance of shares under share-based compensation plans (in shares)				387,708
Share-based employee compensation expense		8,737			8,737
Tax benefit from share-based compensation plans		2,919			2,919
Dividends: Preferred		(4,812)					(4,812)
Dividends: Common		(13,684)					(13,684)
Net change in deferred compensation plans		690			690
Change in redeemable noncontrolling interest		(416)			(416)
Balance at Jun. 30, 2013		2,544,768	169,920	54,274	507,560	6,585	1,831,725	(25,296)
Balance (in shares) at Jun. 30, 2013				54,273,594
Balance at Dec. 31, 2013		2,740,986	267,616	54,667	541,210	(15,641)	1,918,163	(25,029)
Balance (in shares) at Dec. 31, 2013				54,667,295
Increase (Decrease) in Stockholders' Equity
Net income	[1]	121,212					121,212
Other comprehensive income (loss), net of tax		17,741				17,741
Issuance of shares under share-based compensation plans		12,524		290	9,653			2,581
Issuance of shares under share-based compensation plans (in shares)				289,544
Share-based employee compensation expense		8,875			8,875
Tax benefit from share-based compensation plans		3,306			3,306
Dividends: Preferred		(8,188)					(8,188)
Dividends: Common		(36,541)					(36,541)
Net change in deferred compensation plans		739			741			(2)
Change in redeemable noncontrolling interest		(7,501)			(7,501)
Balance at Jun. 30, 2014		$ 2,853,153	$ 267,616	$ 54,957	$ 556,284	$ 2,100	$ 1,994,646	$ (22,450)
Balance (in shares) at Jun. 30, 2014				54,956,839

[1] Net income excludes net income attributable to redeemable noncontrolling interest of $1,209 and $1,048 for the six month periods ended June 30, 2014 and 2013, respectively. Redeemable noncontrolling interest is reflected in the mezzanine section of the consolidated balance sheets. See Note 17 of the Notes to the Unaudited Consolidated Financial Statements.