Consolidated Condensed Statements Of Equity (USD $) In Thousands	Controlling Interest [Member]	Noncontrolling Interest [Member]	Total
Balance at Dec. 31, 2009	$ 3,007,303	$ 295,165	$ 3,302,468
Adjustment to reflect adoption of amendments to ASC 810	(10,562)		(10,562)
Net income	4,897	5,688	10,585
Unrealized fair value adjustments, net of tax:
Securities available for sale	3,264		3,264
Recognized pension and other employee benefit plans net periodic benefit costs	5,022		5,022
Comprehensive income	13,183	5,688	18,871
Preferred stock - (CPP) accretion	8,172		8,172
Preferred stock - (CPP) dividends	(29,835)		(29,835)
Common stock repurchased	(481)		(481)
Common stock issued related to stock-based compensation arrangements	179		179
Stock-based compensation expense	4,116		4,116
Dividends paid to noncontrolling interest of subsidiary preferred stock		(5,688)	(5,688)
Other changes in equity	(7)		(7)
Balance at Jun. 30, 2010	2,992,068	295,165	3,287,233
Balance at Dec. 31, 2010	2,382,840	295,165	2,678,005
Net income	60,150	5,688	65,838
Unrealized fair value adjustments, net of tax:
Securities available for sale	12,702		12,702
Recognized pension and other employee benefit plans net periodic benefit costs	6,336		6,336
Comprehensive income	79,188	5,688	84,876
Common stock repurchased	(887)		(887)
Cash dividends declared ($.01/share)	(5,151)		(5,151)
Stock-based compensation expense	5,147		5,147
Dividends paid to noncontrolling interest of subsidiary preferred stock		(5,688)	(5,688)
Repurchase of common stock warrant - CPP	(79,700)		(79,700)
Other changes in equity	4,780		4,780
Balance at Jun. 30, 2011	$ 2,386,217	$ 295,165	$ 2,681,382