Indebtedness - Senior Credit Facilities (Details)	Dec. 17, 2019 USD ($)	Dec. 31, 2020 USD ($)
Senior Credit Facilities | Senior credit facility
Line of Credit Facility [Line Items]
Consolidated leverage ratio	3.75
Consolidated leverage ratio after certain permitted acquisitions	4.25
Consolidated interest coverage ratio	3.00
Term loan | Term loans
Line of Credit Facility [Line Items]
Face amount of debt	$ 250,000,000.0	$ 250,000,000.0
Global Revolving Commitment Fee | Domestic Revolving Commitment Fee
Line of Credit Facility [Line Items]
Maximum borrowing capacity under financing arrangement	300,000,000.0
Global Revolving Commitment Fee | Foreign credit instrument facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity under financing arrangement	150,000,000.0
Global Revolving Commitment Fee | Senior Credit Facilities | Senior credit facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity under financing arrangement	800,000,000.0
Global Revolving Commitment Fee | Participation Foreign Credit Instrument Facility | Letters of credit and guarantees
Line of Credit Facility [Line Items]
Maximum borrowing capacity under financing arrangement	55,000,000.0
Global Revolving Commitment Fee | Bilateral foreign credit instrument facility | Letters of credit and guarantees
Line of Credit Facility [Line Items]
Maximum borrowing capacity under financing arrangement	$ 45,000,000.0