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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 88	$ 181
Other comprehensive income (loss):
Unrealized hedging gains (losses) on derivatives	25	(129)
Reclassification adjustments for derivative (gains) losses included in net income (interest expense)	0	0
Total unrealized gains (losses) on derivatives	25	(129)
Income tax (expense) benefit	(9)	48
Other comprehensive income (loss), net of tax expense (benefit)	16	(81)
Total comprehensive income attributable to Navient Corporation	$ 104	$ 100

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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