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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

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BORROWED FUNDS - Narrative (Details) - USD ($) $ in Millions		6 Months Ended
	Jun. 29, 2018	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Debt Instrument [Line Items]
Hedging basis adjustments		$ 357		$ 693
Short-term borrowed funds		1,825		2,671
Available borrowing capacity		39,100
Debt redeemed		7,584	$ 9,751
Federal Home Loan Bank Advances and Letters of Credit \| Secured Debt
Debt Instrument [Line Items]
Short-term borrowed funds		10,800		9,400
Federal Home Loan advances
Debt Instrument [Line Items]
Available borrowing capacity		7,000		8,000
Parent Company
Debt Instrument [Line Items]
Principal balance		2,000		2,300
Unamortized deferred issuance costs and/or discounts		(5)		(5)
Banking Subsidiaries
Debt Instrument [Line Items]
Principal balance		11,800		9,500
Unamortized deferred issuance costs and/or discounts		(18)		(19)
Hedging basis adjustments		$ (100)		$ (63)
5.158% fixed-to-floating rate callable subordinated debt \| Parent Company \| Subordinated Debt
Debt Instrument [Line Items]
Debt redeemed	$ 333
Interest rate	5.158%