Retirement and Deferred Compensation Plans - Reconciliation of Changes in Benefit Obligations and the Statement of Funded Status of Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension Plan [Member]
Change in Benefit Obligation
Service cost	$ 15.4	$ 16.5	$ 15.5
Interest cost	19.9	19.4	21.1
Pension Plan [Member] | Foreign Plan [Member]
Change in Benefit Obligation
Benefit obligation, beginning of year	669.8	713.2
Service cost	15.4	16.5
Interest cost	19.0	18.5
Curtailments	0.0	(2.7)
Settlements	(49.5)	(50.9)
Transfers	31.3	26.5
Actuarial loss (gain)	(42.9)	(3.9)
Plan participant contributions	11.6	11.4
Benefits paid	(18.1)	(16.0)
Currency exchange rate changes	87.7	(42.8)
Benefit obligation, end of year	724.3	669.8	713.2
Change in Plan Assets
Fair value of plan assets, beginning of year	586.1	596.3
Actual return on plan assets	12.6	40.7
Settlements	(49.5)	(50.9)
Transfers	31.6	23.7
Plan participant contributions	11.6	11.4
Company contributions	18.5	17.4
Benefits paid	(18.1)	(16.0)
Currency exchange rate changes	78.0	(36.5)
Fair value of plan assets, end of year	670.8	586.1	596.3
Funded Status at End of Year
Funded status, end of year	(53.5)	(83.7)
Amounts Recognized
Noncurrent assets	42.2	22.7
Current liabilities	(0.8)	(1.2)
Noncurrent liabilities	(94.9)	(105.2)
Net amount recognized	(53.5)	(83.7)
Pension Plan [Member] | UNITED STATES
Change in Benefit Obligation
Benefit obligation, beginning of year	18.0	19.2
Service cost	0.0	0.0
Interest cost	0.9	0.9
Curtailments	0.0	0.0
Settlements	0.0	0.0
Transfers	0.0	0.0
Actuarial loss (gain)	1.0	0.0
Plan participant contributions	0.0	0.0
Benefits paid	(2.1)	(2.1)
Currency exchange rate changes	0.0	0.0
Benefit obligation, end of year	17.8	18.0	19.2
Change in Plan Assets
Fair value of plan assets, beginning of year	0.0	0.0
Actual return on plan assets	0.0	0.0
Settlements	0.0	0.0
Transfers	0.0	0.0
Plan participant contributions	0.0	0.0
Company contributions	2.1	2.1
Benefits paid	(2.1)	(2.1)
Currency exchange rate changes	0.0	0.0
Fair value of plan assets, end of year	0.0	0.0	0.0
Funded Status at End of Year
Funded status, end of year	(17.8)	(18.0)
Amounts Recognized
Noncurrent assets	0.0	0.0
Current liabilities	(2.1)	(2.2)
Noncurrent liabilities	(15.7)	(15.8)
Net amount recognized	(17.8)	(18.0)
Postretirement Health Coverage [Member]
Change in Benefit Obligation
Benefit obligation, beginning of year	8.8	10.2
Interest cost	0.4	0.5	0.5
Actuarial loss (gain)	0.4	(1.1)
Benefits paid	(0.7)	(0.8)
Benefit obligation, end of year	8.9	8.8	$ 10.2
Funded Status at End of Year
Funded status, end of year	(8.9)	(8.8)
Amounts Recognized
Current liabilities	(1.0)	(1.0)
Noncurrent liabilities	(7.9)	(7.8)
Net amount recognized	$ (8.9)	$ (8.8)