CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 109	$ (238)
Net change in unrealized gains (losses), net of tax:
Investment securities	179	(195)
Fair value option liabilities attributable to our own credit spread	(111)	12
Derivatives designated as cash flow hedges	14
Derivatives designated as cash flow hedges		2
Pension and post-retirement benefit plans	(3)	1
Total other comprehensive income (loss)	79	(180)
Comprehensive income (loss)	$ 188	$ (418)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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