Segment Information (Tables)

9 Months Ended

Sep. 30, 2015

Segment Reporting [Abstract]

Foreign Currency Disclosure [Text Block]

The following table reflects the average exchange rates used to translate the foreign entities respective local currency results of operations into United States dollars for the three and nine months ended September 30, 2015 and 2014:

	Three Months Ended September 30,					Nine Months Ended September 30,
	2015		2014			2015		2014
United States dollar per Australian dollar	$	0.73	$	0.93		$	0.76	$	0.92
United States dollar per British pound	$	1.55	NM		(a)	$	1.53	NM
United States dollar per Canadian dollar	$	0.76	$	0.92		$	0.79	$	0.91
United States dollar per Euro	$	1.11	$	1.33		$	1.12	$	1.36

Schedule of segment reporting information, by segment [Table Text Block]

The following tables set forth the Company's operating segments for the three and nine months ended September 30, 2015 and 2014 (dollars in thousands):

	Three Months Ended September 30, 2015
	North American Operations		Australian Operations		U.K./European Operations		Total Operations
Operating revenues	$	314,563	$	61,013	$	170,723	$	546,299
Income from operations	$	90,564	$	14,966	$	12,029	$	117,559
Depreciation and amortization	$	35,158	$	7,151	$	5,994	$	48,303
Interest expense, net	$	9,788	$	2,055	$	5,396	$	17,239
Provision for income taxes	$	32,332	$	3,896	$	627	$	36,855
Expenditures for additions to property & equipment, net of grants from outside parties	$	86,620	$	6,354	$	14,195	$	107,169

	Three Months Ended September 30, 2014
	North American Operations		Australian Operations		U.K./European Operations			Total Operations
Operating revenues	$	345,092	$	81,478	$	5,973		$	432,543
Income/(loss) from operations	$	100,948	$	22,355	$	(187	)	$	123,116
Depreciation and amortization	$	32,809	$	7,072	$	396		$	40,277
Interest expense, net	$	9,865	$	2,486	$	221		$	12,572
Provision for/(benefit from) income taxes	$	31,598	$	5,944	$	(597	)	$	36,945
Expenditures for additions to property & equipment, net of grants from outside parties	$	73,159	$	7,661	$	81		$	80,901

	Nine Months Ended September 30, 2015
	North American Operations		Australian Operations		U.K./European Operations		Total Operations
Operating revenues	$	943,167	$	187,763	$	354,618	$	1,485,548
Income from operations	$	224,266	$	44,333	$	21,031	$	289,630
Depreciation and amortization	$	105,399	$	20,771	$	12,398	$	138,568
Interest expense, net	$	30,149	$	6,659	$	11,561	$	48,369
Loss on settlement of foreign currency forward purchase contracts	$	16,374	$	2,312	$	—	$	18,686
Provision for income taxes	$	71,559	$	10,653	$	805	$	83,017
Expenditures for additions to property & equipment, net of grants from outside parties	$	205,330	$	20,128	$	19,236	$	244,694

	Nine Months Ended September 30, 2014
	North American Operations		Australian Operations		U.K./European Operations			Total Operations
Operating revenues	$	966,476	$	240,889	$	16,020		$	1,223,385
Income/(loss) from operations	$	242,927	$	66,621	$	(1,448	)	$	308,100
Depreciation and amortization	$	93,633	$	21,306	$	1,191		$	116,130
Interest expense, net	$	32,094	$	10,035	$	623		$	42,752
Provision for/(benefit from) income taxes	$	77,463	$	16,947	$	(1,998	)	$	92,412
Expenditures for additions to property & equipment, net of grants from outside parties	$	212,058	$	15,541	$	579		$	228,178

Property and equipment by segment [Table Text Block]

The following tables set forth the property and equipment recorded in the consolidated balance sheets for the Company's operating segments as of September 30, 2015 and December 31, 2014 (dollars in thousands):

	September 30, 2015
	North American Operations		Australian Operations		U.K./European Operations		Total Operations
Property and equipment, net	$	3,383,871	$	441,443	$	260,899	$	4,086,213

	December 31, 2014
	North American Operations		Australian Operations		U.K./European Operations		Total Operations
Property and equipment, net	$	3,269,604	$	506,154	$	12,724	$	3,788,482

Operating revenues by geographic areas [Table Text Block]

Operating revenues for each geographic area for three and nine months ended September 30, 2015 and 2014 were as follows (dollars in thousands):

	Three Months Ended
	September 30, 2015				September 30, 2014
	Amount		% of Total		Amount		% of Total
Operating revenues:
United States	$	291,294	53.3	%	$	315,640	73.0	%
Non-United States:
Australia	$	61,013	11.2	%	$	81,478	18.8	%
Canada	23,269		4.2	%	29,452		6.8	%
U.K.	113,011		20.7	%	—		—	%
Netherlands	39,695		7.3	%	4,859		1.1	%
Other	18,017		3.3	%	1,114		0.3	%
Total Non-United States	$	255,005	46.7	%	$	116,903	27.0	%
Total operating revenues	$	546,299	100.0	%	$	432,543	100.0	%

	Nine Months Ended
	September 30, 2015				September 30, 2014
	Amount		% of Total		Amount		% of Total
Operating revenues:
United States	$	867,401	58.4	%	$	879,438	71.9	%
Non-United States:
Australia	$	187,763	12.6	%	$	240,889	19.7	%
Canada	75,766		5.1	%	87,038		7.1	%
U.K.	231,249		15.6	%	—		—	%
Netherlands	85,200		5.7	%	13,193		1.1	%
Other	38,169		2.6	%	2,827		0.2	%
Total Non-United States	$	618,147	41.6	%	$	343,947	28.1	%
Total operating revenues	$	1,485,548	100.0	%	$	1,223,385	100.0	%

Property and equipment by geographic areas [Table Text Block]

Property and equipment for each geographic area as of September 30, 2015 and December 31, 2014 were as follows (dollars in thousands):

	September 30, 2015				December 31, 2014
	Amount		% of Total		Amount		% of Total
Property and equipment located in:
United States	$	3,149,131	77.1	%	$	3,003,299	79.3	%
Non-United States:
Australia	$	441,443	10.8	%	$	506,154	13.4	%
Canada	234,740		5.7	%	266,305		7.0	%
U.K.	245,745		6.0	%	—		—	%
Other	15,154		0.4	%	12,724		0.3	%
Total Non-United States	$	937,082	22.9	%	$	785,183	20.7	%
Total property and equipment, net	$	4,086,213	100.0	%	$	3,788,482	100.0	%