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Defined benefit pension plans (Tables)

9 Months Ended

Sep. 30, 2025

Defined Benefit Pension Plans

Defined benefit pension plans [Line Items]

Schedule of Components of Net Periodic Defined Benefit Cost

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Three months ended

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Nine months ended

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September 30,

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September 30,

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2024

2025

2024

2025

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(In millions)

Service cost

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$

1.6

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$

1.5

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$

4.9

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$

4.4

Interest cost

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5.3

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6.0

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15.9

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17.3

Expected return on plan assets

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(5.5)

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(6.1)

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(16.7)

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(17.5)

Recognized net actuarial losses

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1.0

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.8

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2.9

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2.4

Total

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$

2.4

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$

2.2

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$

7.0

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$

6.6

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- Definition

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Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

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