Consolidated Statement of Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Noninterest income
Total OTTI losses recorded on equity securities	$ 31	$ 237	$ 67	$ 257
Debt securities [Member]
Noninterest income
Total OTTI losses recorded on debt securities	6	(3)	51	14
Total recorded as part of gross realized losses	7	8	52	18
Total losses recognized in OCI as non-credit-related impairment	$ (1)	$ (11)	$ (1)	$ (4)

Includes both the amount by which the fair value of an investment in debt and equity securities is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income and recoveries of previously recognized non-credit-related OTTI which is recognized in other comprehensive income.

No definition available.

Name:	wfc_OtherThanTemporaryImpairmentLossesReversalOfLossesInvestmentsMarketableSecurities
Namespace Prefix:	wfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration