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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Statement of Comprehensive Income [Abstract] |  |  |
Net income | $ 1,721 | $ 1,652 | $ 1,045
Other comprehensive loss: |  |  |
Net unrealized derivative instrument losses arising during the periods, net of income taxes of ($11), ($9) and ($38), respectively | (33) | (14) | (62)
Reclassification adjustment for net derivative losses (gains) included in net income, net of income taxes of $10, ($9) and ($22), respectively | 33 | (16) | (36)
Net unrealized debt securities losses arising during the periods, net of income taxes of ($79), ($4) and ($82), respectively | (239) | (6) | (139)
Other-than-temporary impairment not recognized in earnings on debt securities, net of income taxes of ($1), $0 and ($10), respectively | (3) | 0 | (17)
Reclassification of net debt securities gains to net income, net of income taxes of ($4), ($2) and ($2), respectively | (12) | (2) | (2)
Employee benefit plans: |  |  |
Actuarial (loss) gain, net of income taxes of ($14), $12 and ($20), respectively | (35) | 19 | (34)
Amortization of actuarial loss, net of income taxes of $3, $5 and $6, respectively | 14 | 13 | 10
Amortization of prior service cost, net of income taxes of $0, $0 and $0, respectively | (1) | (1) | (1)
Total other comprehensive loss, net of income taxes | (276) | (7) | (281)
Total comprehensive income | $ 1,445 | $ 1,645 | $ 764

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