Restructuring Charges (Narrative) (Details) $ in Millions	Dec. 31, 2019 USD ($) restructuring_program
Restructuring Cost and Reserve [Line Items]
Restructuring charges incurred to date	$ 333
Closed Restructuring Programs
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 11
Number of restructuring programs \| restructuring_program	4
Restructuring charges incurred to date	$ 288
Closed Restructuring Programs \| Branch closure charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges incurred to date	171
Closed Restructuring Programs \| Severance and other
Restructuring Cost and Reserve [Line Items]
Restructuring charges incurred to date	$ 117

Restructuring and Related Activities, Number of Completed Restructuring Programs

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- Definition

Amount of costs incurred to date for the specified restructuring cost.

+ References

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-Publisher FASB
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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