Consolidated statements of changes in equity (Parenthetical) SFr in Millions	12 Months Ended
Dec. 31, 2016 CHF (SFr)
Tax benefit (charge) from the excess fair value of compensation expense	SFr (110)
Bank
Tax benefit (charge) from the excess fair value of compensation expense	SFr (110)

Amount of increase (decrease) in additional paid in capital (APIC) resulting from a tax benefit (deficiency) associated with an share-based compensation plan other than an employee stock ownership plan (ESOP).

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration