Employee Benefit Plans (Summary Of Pension Obligations And Funded Status) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Change in benefit obligation
Benefit obligation, beginning of period	$ 286.5	$ 259.1	$ 219.8
Service cost	5.1	5.1	4.0
Interest cost	6.0	7.2	8.5
Plan participants’ contributions	0.5	0.5	0.5
Actuarial loss (gain)	(10.8)	27.7	36.7
Benefits paid	(15.6)	(14.2)	(13.8)
Plan amendments	0.1	(0.4)	1.9
Curtailments and settlements	(1.1)	0.0	0.0
Foreign currency exchange rate changes	(0.3)	1.5	1.5
Benefit obligation, end of period	270.4	286.5	259.1
Change in plan assets
Fair value of plan assets, beginning of period	215.3	201.5	181.8
Actual return on plan assets	25.6	24.1	30.0
Employer contributions	2.8	2.2	1.5
Plan participants’ contributions	0.5	0.5	0.5
Benefits paid	(15.6)	(14.2)	(13.8)
Settlements	(0.8)	0.0	0.0
Foreign currency exchange rate changes	(0.1)	1.2	1.5
Fair value of plan assets, end of period	227.7	215.3	201.5
Net funded status	(42.7)	(71.2)	(57.6)
Funded status recognized in the Consolidated Balance Sheets
Other assets—sundry	2.8	0.9	1.4
Other current liabilities	(0.3)	(0.4)	(0.4)
Other long-term liabilities	$ (45.2)	$ (71.7)	$ (58.6)

Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

Name:	us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.