v3.26.1
Stockholders' equity (Tables)
6 Months Ended
Jun. 30, 2026
Stockholders' equity  
Schedule of changes in accumulated other comprehensive loss

Three months ended

Six months ended

June 30, 

June 30, 

  ​ ​ ​

2025

  ​ ​ ​

2026

  ​ ​ ​

2025

  ​ ​ ​

2026

(In millions)

Accumulated other comprehensive loss, net of tax:

 

  ​

 

  ​

 

  ​

 

  ​

Currency translation:

 

  ​

 

  ​

 

  ​

 

  ​

Balance at beginning of period

$

(282.7)

$

(263.1)

$

(300.0)

$

(267.3)

Other comprehensive income (loss)

 

14.2

 

(4.2)

 

31.5

 

-

Balance at end of period

$

(268.5)

$

(267.3)

$

(268.5)

$

(267.3)

Defined benefit pension plans:

 

  ​

 

  ​

 

  ​

 

  ​

Balance at beginning of period

$

(63.4)

$

(28.7)

$

(63.8)

$

(29.0)

Other comprehensive income - amortization
   of prior service cost and net losses included in
   net periodic pension cost

 

.4

 

.3

 

.8

 

.6

Balance at end of period

$

(63.0)

$

(28.4)

$

(63.0)

$

(28.4)

OPEB plans:

 

  ​

 

  ​

 

  ​

 

  ​

Balance at beginning and end of period

$

.3

$

.7

$

.3

$

.7

Total accumulated other comprehensive loss:

 

  ​

 

  ​

 

  ​

 

  ​

Balance at beginning of period

$

(345.8)

$

(291.1)

$

(363.5)

$

(295.6)

Other comprehensive income (loss)

 

14.6

 

(3.9)

 

32.3

 

.6

Balance at end of period

$

(331.2)

$

(295.0)

$

(331.2)

$

(295.0)