Basis and Summary of Significant Accounting Policies - Additional Information (Detail) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
	Apr. 14, 2014 USD ($) state	Sep. 30, 2015 USD ($) shares	Sep. 30, 2014 USD ($) shares	Sep. 30, 2015 USD ($) shares	Sep. 30, 2014 USD ($) shares	Sep. 30, 2015 GBP (£) Store	Sep. 30, 2015 USD ($) Store	Dec. 31, 2014 GBP (£)	Dec. 31, 2014 USD ($)
Significant Accounting Policies [Line Items]
Reclassification adjustment to present sales net of taxes		$ (661,856)	$ (594,455)	$ (2,017,610)	$ (1,606,765)
Uncertain tax benefits that, if recognized, would affect effective tax rate							$ 2,900		$ 2,100
Anti-dilutive securities excluded from the computation of earnings per share assuming dilution (in shares) | shares		281	166	431	143
Inventory valuation reserves							32,200		27,600
Lease merchandise adjustments		$ 38,800	$ 29,900	$ 98,300	$ 64,600
Held-to-maturity securities, amortized cost of investments sold			68,700		68,700
Held-to-maturity securities, net realized gain (loss)			95
Assets Held For Sale							7,542		6,356
Cash surrender value of company-owned life insurance ("COLI") contracts							15,100		14,500
Benefits paid			1,400		1,400		1,000
Level 2
Significant Accounting Policies [Line Items]
Assets Held For Sale							7,542		6,356
Deferred compensation liability							$ 11,600		12,677
Employee
Significant Accounting Policies [Line Items]
Percentage of receipt of base compensation (up to)				75.00%
Percentage of receipt of incentive pay compensation (up to)				100.00%
Non Employee Director
Significant Accounting Policies [Line Items]
Percentage of receipt of base compensation (up to)				100.00%
Percentage of receipt of incentive pay compensation (up to)				100.00%
Variable Interest Entity, Not Primary Beneficiary
Significant Accounting Policies [Line Items]
Number of retail stores | Store						70	70
Maximum exposure to any potential losses associated with VIE							$ 22,300
Held to maturity securities						£ 14,800,000	$ 22,300	£ 13,700,000	$ 21,300
Held to maturity securities, face value | £						£ 10,000,000.0
Progressive
Significant Accounting Policies [Line Items]
Business acquisition, percentage of voting interests acquired	100.00%
Acquisitions of businesses, net of cash acquired	$ 700,000
Number of states in which entity operates | state	46
Reclassification
Significant Accounting Policies [Line Items]
Reclassification adjustment to present sales net of taxes			$ 9,100		$ 19,200