CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
CONSOLIDATED BALANCE SHEETS
Held to maturity, at amortized cost, fair value (in dollars)	$ 1,248,501	$ 1,240,678
Available for sale, at fair value, amortized cost (in dollars)	11,026,485	10,727,717
Equities, available for sale, at fair value, cost (in dollars)	$ 554,639	$ 476,516
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	67,846,587	67,611,341
Treasury stock, shares	5,362,800	5,362,800