AVAILABLE FOR SALE SECURITIES, Contractual Maturities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015
Amortized cost
Within one year	$ 0
After one but within five years	7,463
After five but within ten years	10,466
After ten years	502,488
Total	520,417
Carry value
Within one year	0
After one but within five years	7,480
After five but within ten years	10,541
After ten years	513,919
Total	531,940
Weighted-average yield
Within one year (in hundredths)	0.00%
After one but within five years (in hundredths)	0.26%
After five but within ten years (in hundredths)	0.48%
After ten years (in hundredths)	0.96%
Total (in hundredths)	0.95%
RJ Bank | Agency MBS and CMOs
Amortized cost
Within one year	0
After one but within five years	7,463
After five but within ten years	10,466
After ten years	221,847
Total	239,776
Carry value
Within one year	0
After one but within five years	7,480
After five but within ten years	10,541
After ten years	222,467
Total	240,488
Weighted-average yield
Within one year (in hundredths)	0.00%
After one but within five years (in hundredths)	0.26%
After five but within ten years (in hundredths)	0.48%
After ten years (in hundredths)	0.97%
Total (in hundredths)	0.94%
RJ Bank | Non-agency CMOs:
Amortized cost
Within one year	0
After one but within five years	0
After five but within ten years	0
After ten years	93,272
Total	93,272
Carry value
Within one year	0
After one but within five years	0
After five but within ten years	0
After ten years	87,362
Total	87,362
Weighted-average yield
Within one year (in hundredths)	0.00%
After one but within five years (in hundredths)	0.00%
After five but within ten years (in hundredths)	0.00%
After ten years (in hundredths)	2.39%
Total (in hundredths)	2.39%
RJ Bank | Other securities
Amortized cost
Within one year	0
After one but within five years	0
After five but within ten years	0
After ten years	1,575
Total	1,575
Carry value
Within one year	0
After one but within five years	0
After five but within ten years	0
After ten years	2,028
Total	2,028
Weighted-average yield
Within one year (in hundredths)	0.00%
After one but within five years (in hundredths)	0.00%
After five but within ten years (in hundredths)	0.00%
After ten years (in hundredths)	0.00%
Total (in hundredths)	0.00%
RJ Bank | Sub-total agency MBS & CMOs, non-agency CMOs, and other securities
Amortized cost
Within one year	0
After one but within five years	7,463
After five but within ten years	10,466
After ten years	316,694
Total	334,623
Carry value
Within one year	0
After one but within five years	7,480
After five but within ten years	10,541
After ten years	311,857
Total	329,878
Weighted-average yield
Within one year (in hundredths)	0.00%
After one but within five years (in hundredths)	0.26%
After five but within ten years (in hundredths)	0.48%
After ten years (in hundredths)	1.36%
Total (in hundredths)	1.32%
Non-broker-dealer subsidiaries | ARS - municipals
Amortized cost
Within one year	0
After one but within five years	0
After five but within ten years	0
After ten years	81,492
Total	81,492
Carry value
Within one year	0
After one but within five years	0
After five but within ten years	0
After ten years	89,614
Total	89,614
Weighted-average yield
Within one year (in hundredths)	0.00%
After one but within five years (in hundredths)	0.00%
After five but within ten years (in hundredths)	0.00%
After ten years (in hundredths)	0.42%
Total (in hundredths)	0.42%
Non-broker-dealer subsidiaries | ARS - preferred securities
Amortized cost
Within one year	0
After one but within five years	0
After five but within ten years	0
After ten years	104,302
Total	104,302
Carry value
Within one year	0
After one but within five years	0
After five but within ten years	0
After ten years	112,448
Total	112,448
Weighted-average yield
Within one year (in hundredths)	0.00%
After one but within five years (in hundredths)	0.00%
After five but within ten years (in hundredths)	0.00%
After ten years (in hundredths)	0.27%
Total (in hundredths)	0.27%
Non-broker-dealer subsidiaries | Auction rate securities
Amortized cost
Within one year	0
After one but within five years	0
After five but within ten years	0
After ten years	185,794
Total	185,794
Carry value
Within one year	0
After one but within five years	0
After five but within ten years	0
After ten years	202,062
Total	$ 202,062
Weighted-average yield
Within one year (in hundredths)	0.00%
After one but within five years (in hundredths)	0.00%
After five but within ten years (in hundredths)	0.00%
After ten years (in hundredths)	0.34%
Total (in hundredths)	0.34%