INVESTMENT SECURITIES (Contractual Maturity of Debt Securities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Amortized Cost
Due within one year	$ 449,148
Due after 1 year but within 5 years	3,062,277
Due after 5 years but within 10 years	1,107,476
Due after 10 years	7,156,790
Total	11,775,691
Fair Value
Due within one year	451,412
Due after 1 year but within 5 years	3,120,848
Due after 5 years but within 10 years	1,110,344
Due after 10 years	6,982,275
Total	$ 11,664,879