Credit Agreement (Details) - USD ($) $ in Thousands		9 Months Ended
	Mar. 29, 2019	Sep. 30, 2019	Sep. 30, 2018
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 650,000
Net proceeds from credit facility and long-term debt, including current portion		723,054	$ 0
Repayments of credit facility		393,634	$ 0
Term Loan Facility
Line of Credit Facility [Line Items]
Net proceeds from credit facility and long-term debt, including current portion		100,000
Term Loan Facility | United States of America, Dollars
Line of Credit Facility [Line Items]
Senior unsecured notes, issued amount		$ 100,000
Debt instrument, annual amortization (percent)		5.00%
Term Loan Facility | Swedish Kronor
Line of Credit Facility [Line Items]
Senior unsecured notes, issued amount		$ 150,000
Debt instrument, annual amortization (percent)		5.00%
Net proceeds from credit facility and long-term debt, including current portion		$ 150,000
Credit Agreement
Line of Credit Facility [Line Items]
Term of agreement	5 years
Revolving Credit Facility
Line of Credit Facility [Line Items]
Net proceeds from credit facility and long-term debt, including current portion		100,000
Repayments of credit facility		375,000
Standby Letters of Credit
Line of Credit Facility [Line Items]
Letters of Credit Outstanding, Amount		$ 224,800