Organization, Consolidation and Presentation of Financial Statements - Additional Information (Detail) - USD ($)									9 Months Ended
	Sep. 01, 2016	Aug. 22, 2016	Jun. 21, 2016	May 26, 2016	May 16, 2016	Mar. 03, 2016	Feb. 22, 2016	Mar. 03, 2015	Sep. 30, 2016	Sep. 30, 2015	Nov. 01, 2016	Mar. 31, 2016	Dec. 31, 2015
Basis Of Presentation [Line Items]
Sale of disposal group								$ 275,000,000
Per common share quarterly dividend	$ 0.225			$ 0.225		$ 0.225
Total dividend paid to shareholders		$ 18,600,000			$ 18,600,000		$ 18,800,000
Dividends Payable, Date of Record	Aug. 22, 2016			May 16, 2016		Feb. 22, 2016			Nov. 14, 2016
Dividends Payable, Date to be Paid									Nov. 23, 2016
Share repurchase program, authorized amount												$ 75,000,000
Number of common stock shares purchased									1,000,000
Aggregate share purchase price									$ 21,961,000	$ 59,957,000
Proceeds from the sale of property and equipment									$ 38,518,000	$ 0
Gain loss on disposition of assets and leaseback transaction			$ 19,000,000
leaseback agreement period									P12Y
Deferred gain on sales-leaseback agreement									$ 6,100,000
Reclassification of other assets due to adoption of ASU standard									175,990,000				$ 191,490,000
Reclassification of long-term debt due to adoption of ASU standard									3,203,575,000				3,318,688,000
Reclassification of accrued expenses due to adoption of ASU standard									220,202,000				219,234,000
Reclassification of increased deferred income due to adoption of ASU standard									$ 97,335,000				104,222,000
Recently Implemented Accounting Pronouncements [Member] | Accounting Standard Update (“ASU”) 2015-03 [Member]
Basis Of Presentation [Line Items]
Reclassification of other assets due to adoption of ASU standard													57,100,000
Reclassification of long-term debt due to adoption of ASU standard													57,100,000
Recently Implemented Accounting Pronouncements [Member] | Accounting Standard Update (“ASU”) 2015-17 [Member]
Basis Of Presentation [Line Items]
Reclassification of accrued expenses due to adoption of ASU standard													1,700,000
Reclassification of increased deferred income due to adoption of ASU standard													$ 1,700,000
Subsequent Event [Member]
Basis Of Presentation [Line Items]
Per common share quarterly dividend											$ 0.225