Employee Benefit Plans (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2030
Defined Benefit Plan Disclosure [Line Items]
Company contributions	$ 3,821,000	$ 6,825,000	$ 4,750,000
Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average discount rate used to determine net periodic benefit cost	2.55%	3.28%	4.27%
Rate of compensation increase to determine the net periodic benefit cost	4.00%	4.00%	4.00%
Expected long-term rate of return on plan assets	7.00%	7.00%	7.00%
Weighted average discount rates used to determine actuarial present value of the projected benefit obligation	2.86%	2.55%	3.28%
Company contributions	$ 3,821,000	$ 6,825,000
Defined Benefit Pension Plan [Member] | U.S. Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plans, employer contribution plans, employer contribution percentage, maximum	3.00%
Defined contribution plans, employer contribution percentage, for new hires, minimum	3.00%
Defined contribution plans, employer contribution percentage, for new hires, maximum	8.00%
Defined Contribution Plan Employer Contribution Percentage Vested After Three Years	100.00%
Incurred expenses	$ 14,800,000	14,400,000	$ 10,800,000
Defined Benefit Pension Plan [Member] | Non-U.S. Employees [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan employer contribution percentage for branch offices, minimum	5.00%
Defined contribution plan employer contribution percentage for branch offices, maximum	78.30%
Incurred expenses	$ 3,400,000	3,000,000.0	$ 2,200,000
Defined Benefit Pension Plan [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets consist of shares in investment trusts, percentage	76.00%
Defined Benefit Pension Plan [Member] | Fixed Maturities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets consist of shares in investment trusts, percentage	22.00%
Defined Benefit Pension Plan [Member] | Limited Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets consist of shares in investment trusts, percentage	1.00%
Defined Benefit Pension Plan [Member] | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets consist of shares in investment trusts, percentage	1.00%
Defined Benefit Pension Plan [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentage	70.00%
Defined Benefit Pension Plan [Member] | Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentage	30.00%
Defined Benefit Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Private equity limited partnerships	$ 2,600,000	4,600,000
Company contributions	$ 0	$ 0
Post-Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted average discount rate used to determine net periodic benefit cost	2.55%	3.28%	4.27%
Weighted average discount rates used to determine actuarial present value of the projected benefit obligation	2.86%	2.55%	3.28%
Company contributions	$ 267,000	$ 232,000
Healthcare inflation rate	6.50%
Incurred expenses	$ 1,200,000	$ 1,300,000	$ 1,200,000
Post-Retirement Plan [Member] | Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Healthcare inflation rate				4.75%