Retirement and Other Postretirement Benefit Plans - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Defined Benefit Retirement Plans
Amounts recognized on the balance sheet:
Amounts unrelated to service costs, benefit	$ 600,000	$ 900,000	$ 1,100,000	$ 1,700,000
Defined Benefit Retirement Plans | U.S.
Amounts recognized on the balance sheet:
Employer contribution to defined benefit retirement plans			300,000	$ 300,000
Expected employer contribution in full current year	1,400,000		1,400,000
Net amortization gain deferral	$ (100,000)		$ (200,000)
Defined Benefit Plan, Tax Status [Extensible List]	us-gaap:NonqualifiedPlanMember	us-gaap:NonqualifiedPlanMember	us-gaap:NonqualifiedPlanMember	us-gaap:NonqualifiedPlanMember	us-gaap:NonqualifiedPlanMember
Defined Benefit Retirement Plans | European
Amounts recognized on the balance sheet:
Employer contribution to defined benefit retirement plans			$ 1,900,000	$ 2,300,000
Expected employer contribution in full current year	$ 5,000,000.0		5,000,000.0
Net amortization gain deferral	(100,000)	$ (100,000)	(200,000)	(200,000)
Postretirement Health Care and Life Insurance Benefit Plans
Amounts recognized on the balance sheet:
Net amortization gain deferral	200,000	$ 200,000	500,000	$ 500,000
Postretirement Health Care and Life Insurance Benefit Plans | Maximum
Amounts recognized on the balance sheet:
Expected employer contribution in full current year	$ 500,000		$ 500,000