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PARENT COMPANY FINANCIALS - Condensed Statements of Operations (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Operating Income |  |  |
Equity securities gains | $ 0 | $ 1 | $ 3
Total interest income | 5,758 | 4,920 | 4,266
Operating expense |  |  |
Salaries and employee benefits | 1,880 | 1,766 | 1,714
Interest expense | 1,226 | 747 | 508
All other expenses | 495 | 542 | 521
Income taxes | 462 | 260 | 489
NET INCOME | 1,721 | 1,652 | 1,045
Other comprehensive income (loss), net of income taxes: |  |  |
Net unrealized derivative instrument gains (losses) arising during the period | (33) | (14) | (62)
Net other comprehensive loss | (276) | (7) | (281)
Total other comprehensive loss, net of income taxes | (276) | (7) | (281)
Total comprehensive income | 1,445 | 1,645 | 764
Parent company |  |  |
Operating Income |  |  |
Dividends from banking subsidiaries | 1,650 | 1,055 | 555
Interest income | 46 | 43 | 53
Management and service fees | 22 | 31 | 26
Equity securities gains | 0 | 1 | 3
All other operating income | 1 | 1 | 7
Total interest income | 1,726 | 1,136 | 644
Operating expense |  |  |
Salaries and employee benefits | 25 | 40 | 37
Interest expense | 89 | 97 | 99
All other expenses | 23 | 22 | 15
Total operating expense | 137 | 159 | 151
Income before taxes and undistributed income | 1,589 | 977 | 493
Income taxes | (13) | (10) | (26)
Income before undistributed income of subsidiaries and associated companies | 1,602 | 987 | 519
Equity in undistributed income (losses) of subsidiaries and associated companies | 120 | 665 | 526
NET INCOME | 1,721 | 1,652 | 1,045
Other comprehensive income (loss), net of income taxes: |  |  |
Net pension plan activity arising during the period | 5 | (1) | (2)
Net unrealized derivative instrument gains (losses) arising during the period | 2 | 1 | (8)
Net other comprehensive loss | 7 | 0 | (10)
Other comprehensive income (loss) activity of Bank subsidiaries, net of income taxes | (283) | (7) | (271)
Total other comprehensive loss, net of income taxes | (276) | (7) | (281)
Total comprehensive income | 1,445 | 1,645 | 764
Nonbank subsidiaries | Parent company |  |  |
Operating Income |  |  |
Interest income | 2 | 1 | 0
Dividends from nonbank subsidiaries | 5 | 4 | 0
Operating expense |  |  |
Equity in undistributed income (losses) of subsidiaries and associated companies | 10 | 10 | 4
Bank subsidiaries | Parent company |  |  |
Operating expense |  |  |
Equity in undistributed income (losses) of subsidiaries and associated companies | $ 109 | $ 655 | $ 522

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