Change % of Revenue 10.0% 0.9% (1.3)%(0.5)% (0.4)% (0.4)% Q4 2022 Gross Margin Personnel Expenses Labor Strikes in Germany Nonrecurring Compensation Charge Other Expenses Q4 2023 6.0% 8.0% 10.0% 12.0% 8.3% Change % of Revenue | --- | --- | --- | --- | --- | --- | |--------------------|--------|--------|---------|-------|-------| | ($ in millions) | 2023 | 2022 | F/(U) | 2023 | 2022 | | Total Revenue (1) | $1,546 | $1,390 | 11.2% | | | | Gross Margin | $597 | $526 | 13.6% | 38.7% | 37.8% | | Operating Expens ...