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Post-employment benefits for associates (Details) - 12 months ended Dec. 31, 2020 SFr in Millions, $ in Millions | USD ($) | CHF (SFr)
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Disclosure of defined benefit plans [line items] |  |
Concentration of major plans, geographic | The major plans are based in Switzerland, the United States, the United Kingdom, Germany and Japan, which represent 95% of the Group’s total DBO for pension plans. | The major plans are based in Switzerland, the United States, the United Kingdom, Germany and Japan, which represent 95% of the Group’s total DBO for pension plans.
Major plans percentage in group DBO pensions | 95.00% | 95.00%
Most signigicant countries percentage on group DBO post employment benefit plans | 81.00% | 81.00%
Net Pre-tax curtailment gain (loss) | $ 101 | SFr 90

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