Revolving Credit Facilities and Mortgage Payable - Domestic Line of Credit (Details)	1 Months Ended		12 Months Ended
	Oct. 31, 2016 USD ($)	Nov. 30, 2014	Mar. 31, 2017 USD ($)	May 30, 2017 USD ($)
Notes Payable and Long-Term Debt
Maximum borrowing capacity with contingent increase			$ 600,000,000
Credit Agreement
Notes Payable and Long-Term Debt
Term of agreement (in years)	5 years	5 years
Current borrowing capacity	$ 400,000,000		400,000,000
Maximum available for the issuance of letters of credit	75,000,000
Maximum available for swing loans	$ 5,000,000
Additional available credit			200,000,000
Capacity available for currency borrowings			$ 150,000,000
Spread on variable interest rate (as a percent)			1.00%
Fees on the daily unused amount (as a percent)			0.175%
Additional Financial Covenants Required
Total adjusted leverage ratio, numerator, to allow for maximum limit on acquisitions under terms of the Credit Agreement covenants			2.75
Credit Agreement | Minimum
Notes Payable and Long-Term Debt
Fees on the daily unused amount (as a percent)			0.175%
Additional Financial Covenants Required
Asset coverage ratio, numerator, to be maintained under credit agreement covenants			3.25
Ratio of consolidated EBITDA plus annual rental expense to annual interest expense plus annual rental expense, numerator, to be maintained under Credit Agreement covenants			2.25
Credit Agreement | Maximum
Notes Payable and Long-Term Debt
Fees on the daily unused amount (as a percent)			0.30%
Additional Financial Covenants Required
Covenant capital expenditures allowed			$ 110,000,000
Total adjusted leverage ratio, numerator, to allow for maximum limit on acquisitions under terms of the Credit Agreement covenants			2.75
Additional unsecured debt allowed under credit agreement covenants			$ 200,000,000
Credit Agreement | LIBOR based interest rates
Notes Payable and Long-Term Debt
Interest rate, effective percentage			2.48%
Credit Agreement | LIBOR based interest rates | First 30 days
Notes Payable and Long-Term Debt
Spread on variable interest rate (as a percent)			1.25%
Credit Agreement | LIBOR based interest rates | Thereafter
Notes Payable and Long-Term Debt
Variable interest rate basis			LIBOR
Credit Agreement | LIBOR based interest rates | Thereafter | Maximum
Notes Payable and Long-Term Debt
Spread on variable interest rate (as a percent)			2.00%
Credit Agreement | Alternate Base Rate based interest rates
Notes Payable and Long-Term Debt
Interest rate, effective percentage			4.50%
Credit Agreement | Alternate Base Rate based interest rates | First 30 days
Notes Payable and Long-Term Debt
Spread on variable interest rate (as a percent)			0.25%
Credit Agreement | Federal Effective Funds Rate | First 30 days
Notes Payable and Long-Term Debt
Spread on variable interest rate (as a percent)			0.50%
Line of Credit | Second Amended And Restated Credit Agreement, As Amended | Subsequent Event
Additional Financial Covenants Required
Long-term line of credit				$ 0
Line of Credit | Revolving Credit Facility
Additional Financial Covenants Required
Deferred financing costs			$ 1,000,000
Line of Credit | Revolving Credit Facility | Second Amended And Restated Credit Agreement, As Amended
Notes Payable and Long-Term Debt
Current borrowing capacity			0
Additional Financial Covenants Required
Proceeds from lines of credit			332,000,000
Repayments of lines of credit			385,000,000
Outstanding letters of credit			549,000
Amount available under the credit agreement			378,000,000
Line of Credit | Revolving Credit Facility | Second Amended And Restated Credit Agreement, As Amended | Subsequent Event
Additional Financial Covenants Required
Long-term line of credit				0
Line of Credit | Revolving Credit Facility | Second Amended And Restated Credit Agreement, As Amended
Additional Financial Covenants Required
Amount available under the credit agreement			$ 378,000,000
Line of Credit | Revolving Credit Facility | Second Amended And Restated Credit Agreement, As Amended | Subsequent Event
Additional Financial Covenants Required
Amount available under the credit agreement				$ 378,000,000