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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 | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Numerator: |  |  |  |
Net income attributable to Navient Corporation | $ 125 | $ 182 | $ 305 | $ 474
Denominator: |  |  |  |
Weighted average shares used to compute basic EPS | 322 | 381 | 331 | 389
Effect of dilutive securities: |  |  |  |
Dilutive effect of stock options, non-vested restricted stock, restricted stock units and Employee Stock Purchase Plans ("ESPPs") | 6 | 6 | 4 | 7
Dilutive potential common shares | 6 | 6 | 4 | 7
Weighted average shares used to compute diluted EPS | 328 | 387 | 335 | 396
Basic earnings (loss) per common share attributable to Navient Corporation: |  |  |  |
Continuing operations | $ 0.39 | $ 0.48 | $ 0.92 | $ 1.22
Discontinued operations | 0 | 0 | 0 | 0
Total | 0.39 | 0.48 | 0.92 | 1.22
Diluted earnings (loss) per common share attributable to Navient Corporation: |  |  |  |
Continuing operations | 0.38 | 0.47 | 0.91 | 1.20
Discontinued operations | 0 | 0 | 0 | 0
Total | $ 0.38 | $ 0.47 | $ 0.91 | $ 1.20

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