Segment Information - Long-Lived Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Company's long-lived assets	$ 15,307,049	$ 14,503,084
Operating lease right-of-use assets	1,325,872	1,475,057
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Company's long-lived assets	6,703,449	6,429,861
Operating lease right-of-use assets	313,589	363,515
EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Company's long-lived assets	5,117,439	5,002,271
Operating lease right-of-use assets	478,418	547,547
Asia-Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Company's long-lived assets	3,486,161	3,070,952
Operating lease right-of-use assets	$ 533,865	$ 563,995