Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Operating activities
Net income	$ 88	$ 181
Adjustments to reconcile net income to net cash provided by operating activities:
Goodwill and acquired intangible asset impairment and amortization expense	6	4
Stock-based compensation expense	14	12
Unrealized (gains) losses on derivative and hedging activities	13	(131)
Provisions for loan losses	107	111
Increase in restricted cash - other	(7)	(5)
Decrease in accrued interest receivable	60	71
Decrease in accrued interest payable	(65)	(145)
Decrease in other assets	84	308
Increase (decrease) in other liabilities	50	(64)
Total net cash provided by operating activities	350	342
Investing activities
Education loans acquired	(798)	(1,537)
Reduction of education loans:
Installment payments, claims and other	3,918	3,734
Other investing activities, net	15	69
Purchases of other securities		(42)
Proceeds from maturities of other securities	8	41
Total net cash provided by investing activities	3,011	2,185
Financing activities
Borrowings collateralized by loans in trust - issued	1,919	1,545
Borrowings collateralized by loans in trust - repaid	(3,203)	(3,228)
Other short-term borrowings repaid	(25)
Other long-term borrowings issued	807
Other long-term borrowings repaid	(542)	(974)
Other financing activities, net	(120)	113
Common stock repurchased	(110)	(200)
Common stock dividends paid	(46)	(54)
Net cash used in financing activities	(3,250)	(2,953)
Net increase (decrease) in cash and cash equivalents	111	(426)
Cash and cash equivalents at beginning of period	1,253	1,594
Cash and cash equivalents at end of period	1,364	1,168
Cash disbursements made (refunds received) for:
Interest	670	515
Income taxes paid	9	20
Income taxes received		(2)
Asset-backed Securities, Securitized Loans and Receivables [Member]
Financing activities
Asset-backed commercial paper conduits, net	(1,930)	(155)
Assets and Liabilities of Consolidated Variable Interest Entities [Member]
Reduction of education loans:
Increase in restricted cash - variable interest entities	$ (132)	$ (80)

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Also includes the amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

No definition available.