Debt And Shareholders' Equity (Narrative) (Details) (USD $)	0 Months Ended		3 Months Ended	6 Months Ended									3 Months Ended	6 Months Ended
	Jul. 29, 2014	May 15, 2014	Sep. 30, 2014	Jun. 30, 2014	Jun. 30, 2013	Nov. 15, 2014	Sep. 23, 2014	Aug. 28, 2014	Aug. 15, 2014	Jul. 28, 2014	Jul. 25, 2014	Dec. 31, 2013	Jun. 30, 2014 Long-Term Senior Notes [Member]	Jun. 30, 2014 Long-Term Senior Notes [Member]
Debt And Shareholders' Equity [Line Items]
Company's Tier 1 common ratio for stress test											10.00%
Minimum tier 1 common ratio for stress test											10.00%
Stock Issued During Period, Value, New Issues			$ 400,000,000
Common Stock, Value, Issued				4,192,136,000						525,000,000		4,179,024,000
Common stock, issued shares				185,112,965						17,600,000		184,677,696
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax				83,190,000	65,209,000
Debt [Abstract]
Repayments of notes													130,000,000	255,000,000
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				(27,926,000)	6,392,000
Senior Notes, Current							240,600,000
Long-term Senior Notes, optional early redemption				44,300,000		26,900,000			17,400,000
Subordinated Borrowing, Interest Rate		0.00%
Subordinated Debt		30,200,000
Convertible Subordinated Debt		75,700,000
Common Stock Price Per Share										$ 29.80
Common stock value net of commission and fees	516,000,000
Underwriter 30-day common stock options percent								15.00%
Underwriter 30-day common stock options								78,700,000
Subordinate Debt, remainder redeemable 2014				$ 75,000,000