DISCONTINUED OPERATIONS AND SIGNIFICANT DISPOSALS - Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Discontinued operations
Income (loss) from discontinued operations, net of taxes	$ 21	$ (23)	$ 3	$ (25)
Results of Discontinued Operations
Total revenues, net of interest expense	0	0	0	0
Income (loss) from discontinued operations	33	(36)	5	(39)
Provision (benefit) for income taxes on discontinued operations	12	(13)	2	(14)
Income (loss) from discontinued operations, net of taxes	21	(23)	3	(25)
Discontinued operations, disposed of by sale \| Egg Banking PLC
Discontinued operations
Income (loss) from discontinued operations, net of taxes	21	(20)	3	(22)
Results of Discontinued Operations
Income (loss) from discontinued operations, net of taxes	$ 21	$ (20)	$ 3	$ (22)

Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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- Definition

Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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