Debt (Details Textual)			3 Months Ended	6 Months Ended		18 Months Ended
	Mar. 19, 2021 USD ($)	Jul. 16, 2019	Dec. 31, 2020 USD ($) $ / shares	Jun. 30, 2021 USD ($) $ / shares	Jun. 30, 2020 USD ($)	Jun. 30, 2020	Jun. 30, 2022	Dec. 31, 2021	Sep. 04, 2020 USD ($) $ / shares
Line of Credit Facility [Line Items]
Loss on extinguishment of debt				$ 7,610,000	$ 0
Common shares, par value (in dollars per share) | $ / shares			$ 1.25	$ 1.25
2022 EUR Senior Notes
Line of Credit Facility [Line Items]
Repayment of debt	$ 400,900,000		$ 191,400,000
Loss on extinguishment of debt	7,600,000		1,200,000
Make-whole premium	$ 6,600,000
Senior Credit Facility
Line of Credit Facility [Line Items]
Letters of credit outstanding			58,100,000	$ 61,100,000
Line of credit facility, current borrowing capacity			741,900,000	738,900,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Revolving credit facility			$ 0	$ 0
Revolving Credit Facility | New Credit Agreement
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity									$ 800,000,000.0
Cash and cash equivalents excluded from leverage ratio									$ 250,000,000.0
Common shares, par value (in dollars per share) | $ / shares									$ 1.25
Revolving Credit Facility | New Senior Credit Facility
Line of Credit Facility [Line Items]
Maximum increase in borrowing capacity									$ 400,000,000.0
Line of credit, commitment fee (as a percentage)				0.20%
Letter of Credit | New Senior Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity									750,000,000.0
Swing Line Loans | New Senior Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity									$ 30,000,000.0
LIBOR | Revolving Credit Facility | New Senior Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate				1.375%
Base Rate | Revolving Credit Facility | New Senior Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate				0.375%
Minimum | Revolving Credit Facility | New Senior Credit Facility
Line of Credit Facility [Line Items]
Commitment fee percentage for unused capacity		0.09%
Minimum | LIBOR | Revolving Credit Facility | New Senior Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.00%
Minimum | Base Rate | Revolving Credit Facility | New Senior Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate		0.00%
Maximum | Revolving Credit Facility | New Credit Agreement
Line of Credit Facility [Line Items]
Percentage of dividends and share purchases						115.00%
Maximum | Revolving Credit Facility | New Credit Agreement | Forecast
Line of Credit Facility [Line Items]
Leverage ratio							4.00	4.00
Leverage ratio with acquisitions							4.50
Maximum | Revolving Credit Facility | New Senior Credit Facility
Line of Credit Facility [Line Items]
Commitment fee percentage for unused capacity		0.30%
Maximum | LIBOR | Revolving Credit Facility | New Senior Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate		1.75%
Maximum | Base Rate | Revolving Credit Facility | New Senior Credit Facility
Line of Credit Facility [Line Items]
Basis spread on variable rate		0.75%