Segment Reporting (Details) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Asset information for the Company's FFELP loans business segment
FFELP Loans, net	$ 142,634,378,000	$ 148,649,400,000
Cash and investments	6,041,000,000	5,963,000,000
Other	4,418,000,000	3,911,000,000
Total assets	$ 153,094,000,000	$ 158,523,000,000

Amount of total assets attributed to the reportable segment.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-Paragraph 27

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