Segment and Geographic Area Information Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Property and equipment, net	$ 4,503,319	$ 4,215,063
North American Operations [Member]
Segment Reporting Information [Line Items]
Property and equipment, net	3,590,625	3,433,669
Australian Operations [Member]
Segment Reporting Information [Line Items]
Property and equipment, net	634,148	465,123
U.K./European Operations [Member]
Segment Reporting Information [Line Items]
Property and equipment, net	$ 278,546	$ 316,271