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Consolidated Statements of Comprehensive Income - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Consolidated Statements of Comprehensive Income [Abstract] |  |  |  |
Net income | $ 1,356 | $ 1,142 | $ 3,933 | $ 4,583
Other comprehensive income (loss): |  |  |  |
Net unrealized securities (losses) gains, net of tax | (2) | (15) | 4 | (8)
Foreign currency translation adjustments, net of tax | 107 | 11 | 456 | (115)
Net unrealized Pension and other postretirement benefits, net of tax | 7 | 7 | 8 | 39
Other comprehensive income (loss) | 112 | 3 | 468 | (84)
Comprehensive income | $ 1,468 | $ 1,145 | $ 4,401 | $ 4,499

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