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Earnings per Common Share - Schedule of Earnings per Common Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Numerator: |  |  |  |
Net income attributable to Navient Corporation | $ 230 | $ 237 | $ 535 | $ 711
Denominator: |  |  |  |
Weighted average shares used to compute basic EPS | 310 | 369 | 324 | 382
Effect of dilutive securities: |  |  |  |
Dilutive effect of stock options, non-vested restricted stock, restricted stock units and Employee Stock Purchase Plans ("ESPPs") | 6 | 6 | 5 | 7
Dilutive potential common shares | 6 | 6 | 5 | 7
Weighted average shares used to compute diluted EPS | 316 | 375 | 329 | 389
Basic earnings (loss) per common share attributable to Navient Corporation: |  |  |  |
Continuing operations | $ 0.74 | $ 0.64 | $ 1.65 | $ 1.86
Discontinued operations | 0 | 0 | 0 | 0
Total | 0.74 | 0.64 | 1.65 | 1.86
Diluted earnings (loss) per common share attributable to Navient Corporation: |  |  |  |
Continuing operations | 0.73 | 0.63 | 1.63 | 1.83
Discontinued operations | 0 | 0 | 0 | 0
Total | $ 0.73 | $ 0.63 | $ 1.63 | $ 1.83

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