Operating Information by Segment and Geographic Area - External Revenue and Total Assets by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 3,157,000	$ 3,103,000	$ 3,236,000	$ 2,939,000	$ 3,268,000	$ 3,457,000	$ 3,735,000	$ 3,698,000	$ 12,434,879	$ 14,157,929	$ 15,454,484
Total assets	7,279,563				7,309,812				7,279,563	7,309,812
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									8,130,000	9,388,000	7,895,000
Total assets	4,526,000				3,982,000				4,526,000	3,982,000
Asia Pacific (includes Australia)
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,264,000	1,324,000	1,695,000
Total assets	617,000				562,000				617,000	562,000
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,458,000	1,791,000	2,869,000
Total assets	1,081,000				1,404,000				1,081,000	1,404,000
Central and South America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,252,000	1,126,000	2,021,000
Total assets	612,000				813,000				612,000	813,000
Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									331,000	529,000	$ 974,000
Total assets	$ 444,000				$ 549,000				$ 444,000	$ 549,000