Retirement Plans - Fund Status (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Unfunded status of nonqualified defined benefit deferred pension plans included in Other accrued liabilities	$ 65,909	$ 74,323
Prepaid pension asset included in Other noncurrent assets	(34,990)	(32,732)
Total unfunded status	34,241	44,794
Accumulated other comprehensive loss, before income taxes	(268,275)	(280,644)
U.S. | Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Unfunded status of nonqualified defined benefit deferred pension plans included in Other accrued liabilities	63,538	72,484
Other international plans
Defined Benefit Plan Disclosure [Line Items]
Unfunded status of nonqualified defined benefit deferred pension plans included in Other accrued liabilities	2,371	1,839
Unfunded Plan | Nonqualified Plan
Defined Benefit Plan Disclosure [Line Items]
Unfunded status of nonqualified defined benefit deferred pension plans included in Other accrued liabilities	310	312
Unfunded status of nonqualified defined benefit pension plans included in Other noncurrent liabilities	$ 3,012	$ 2,891