Segment Information - Segment Disclosures (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total revenues	$ 4,368,428	$ 3,611,989	$ 2,725,867
Total depreciation and amortization	1,042,480	837,207	525,580
Capital expenditures	1,378,725	1,113,365	868,120
Americas
Segment Reporting Information [Line Items]
Total revenues	2,172,760	1,679,549	1,512,535
Total depreciation and amortization	515,726	319,202	278,216
Capital expenditures	621,158	503,855	401,685
EMEA
Segment Reporting Information [Line Items]
Total revenues	1,346,256	1,171,339	698,807
Total depreciation and amortization	316,250	313,291	117,655
Capital expenditures	555,346	400,642	202,322
Asia-Pacific
Segment Reporting Information [Line Items]
Total revenues	849,412	761,101	514,525
Total depreciation and amortization	210,504	204,714	129,709
Capital expenditures	202,221	208,868	264,113
U.S.
Segment Reporting Information [Line Items]
Total revenues	$ 2,000,000	$ 1,500,000	$ 1,400,000