Years ended December 31,

2020

2021

2022

(In millions)

Accumulated other comprehensive loss, net of tax:

Currency translation:

Balance at beginning of period

$

(246.8)

$

(233.4)

$

(240.4)

Other comprehensive income (loss)

13.4

(7.0)

(28.8)

Balance at end of period

$

(233.4)

$

(240.4)

$

(269.2)

Defined benefit pension plans:

Balance at beginning of period

$

(202.2)

$

(214.5)

$

(163.3)

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

13.4

14.9

9.9

Net actuarial gain (loss) arising during year

(25.7)

36.3

90.3

Balance at end of period

$

(214.5)

$

(163.3)

$

(63.1)

OPEB plans:

Balance at beginning of period

$

.2

$

(.3)

$

(.4)

Other comprehensive loss - amortization
of prior service credit and net losses
included in net periodic OPEB cost

(.2)

(.3)

(.3)

Net actuarial gain (loss) arising during year

(.3)

.2

1.5

Balance at end of period

$

(.3)

$

(.4)

$

.8

Total accumulated other comprehensive loss:

Balance at beginning of period

$

(448.8)

$

(448.2)

$

(404.1)

Other comprehensive income

.6

44.1

72.6

Balance at end of period

$

(448.2)

$

(404.1)

$

(331.5)