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Indebtedness (Narrative) (Details) - USD ($) $ in Thousands	Jan. 13, 2020	Oct. 16, 2019	Oct. 15, 2019	Jul. 03, 2021	Nov. 06, 2020	Dec. 13, 2019	Sep. 03, 2019
Line of Credit | U.S. revolving credit facility
Debt Instrument
Line of Credit Facility, Current Borrowing Capacity			$ 1,100,000
Expansion option to increase credit facility			$ 400,000
Line of Credit | SECT revolving credit facility
Debt Instrument
Line of Credit Facility, Current Borrowing Capacity							$ 35,000
Senior Notes | Senior notes 4.25%
Debt Instrument
Debt Instrument, Face Amount						$ 500,000
Debt Instrument, Interest Rate, Stated Percentage						4.25%
Senior Notes | Senior notes 5.25%
Debt Instrument
Debt Instrument, Interest Rate, Stated Percentage	5.25%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	101.313%
Early Repayment of Senior Debt	$ 300,000
Gain (Loss) on Extinguishment of Debt	$ (3,939)
Securitization Program
Debt Instrument
Maximum credit facility amount that can borrow					$ 80,000
Percentage of borrowing capacity on the Securitization Program		80.00%
Percentage of borrowing base on the Securitization Program		100.00%
Minimum borrowing requirement for the Securitization Program				$ 55,700

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