Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
ASSETS
Cash to be used to settle obligations of consolidated VIEs	$ 101,256	$ 128,586
Loans:
Loans to be used to settle obligations of consolidated VIEs	5,206,007	5,717,316
Liabilities:
Term debt	697,910	979,254
Shareholders' equity:
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,200,000,000	1,200,000,000
Common stock, shares issued	323,179,426	323,225,355
Common stock, shares outstanding	323,179,426	323,225,355
Variable Interest Entity, Primary Beneficiary [Member]
ASSETS
Cash to be used to settle obligations of consolidated VIEs	54,300	46,500
Loans:
Loans to be used to settle obligations of consolidated VIEs	670,300	889,700
Liabilities:
Term debt	$ 410,600	$ 693,500