Note 16 - Retirement Benefit Plans The following table sets forth the net periodic benefit cost for the Company’s defined benefit pension plans. The amounts for the three and nine months ended September 30, 2026 are based on calculations prepared by the Company's actuaries and represent the Company’s best estimate of that period’s proportionate share of the amounts to be recorded for the year ending December 31, 2026. | | | | | | | | | | | | | | | | | | | | | | U.S. Plans | International Plans | Total | | Three Months Ended
September 30, | Three Months Ended
September 30, | Three Months Ended
September 30, | | 2026 | 2025 | 2026 | 2025 | 2026 | 2025 | Components of net periodic benefit
cost: | | | | | | | | Service cost | $ | 0.1 | | $ | 0.2 | | $ | 0.5 | | $ | 0.4 | | $ | 0.6 | | $ | 0.6 | | | Interest cost | 4.2 | | 4.3 | | 2.8 | | 2.9 | | 7.0 | | 7.2 | | | Expected return on plan assets | (2.4) | | (2.1) | | (2.4) | | (2.3) | | (4.8) | | (4.4) | | | Amortization of prior service cost | — | | — | | 0.1 | | 0.1 | | 0.1 | | 0.1 | | | | | | | | | | | | | | | | | Net periodic benefit cost | $ | 1.9 | | $ | 2.4 | | $ | 1.0 | | $ | 1.1 | | $ | 2.9 | | $ | 3.5 | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | U.S. Plans | International Plans | Total | | Nine Months Ended
September 30, | Nine Months Ended
September 30, | Nine Months Ended
September 30, | | 2026 | 2025 | 2026 | 2025 | 2026 | 2025 | Components of net periodic benefit
cost: | | | | | | | | Service cost | $ | 0.4 | | $ | 0.5 | | $ | 1.4 | | $ | 1.4 | | $ | 1.8 | | $ | 1.9 | | | Interest cost | 12.4 | | 13.0 | | 8.6 | | 8.4 | | 21.0 | | 21.4 | | | Expected return on plan assets | (7.0) | | (6.2) | | (7.2) | | (6.9) | | (14.2) | | (13.1) | | | Amortization of prior service cost | — | | — | | 0.2 | | 0.2 | | 0.2 | | 0.2 | | | | | | | | | | | | | | | | | Net periodic benefit cost | $ | 5.8 | | $ | 7.3 | | $ | 3.0 | | $ | 3.1 | | $ | 8.8 | | $ | 10.4 | | | | | | | | |
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