Leases Leases (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Operating lease charges	$ 37,309	$ 115,852
Sublease receipts	$ (2,065)	(5,559)
Cash paid for amounts included in measurement of operating lease liabilities		91,235
Cash paid for short-term operating leases not included in operating lease liabilities		21,247
Right-of-use assets obtained in exchange for new operating lease liabilities		$ 36,371
Weighted-average discount rate	7.90%	7.90%
Weighted-average remaining lease term		4 years
2019	$ 30,741	$ 30,741
2020	109,746	109,746
2021	78,774	78,774
2022	49,954	49,954
2023	24,887	24,887
Thereafter	11,976	11,976
Total undiscounted operating lease liabilities	306,078	306,078
Less: Interest	(33,563)	(33,563)
Operating lease liabilities	272,515	272,515	$ 0
2019			145,345
2020			116,785
2021			80,362
2022			47,417
2023			16,460
Thereafter			2,280
Total future minimum rental payments			$ 408,649
Other store expenses [Member]
Lessee, Lease, Description [Line Items]
Operating lease charges	36,441	111,226
Other charges [Member]
Lessee, Lease, Description [Line Items]
Operating lease charges	$ 2,933	$ 10,185