Accounts and Other Receivables - Allowance for Doubtful Accounts Related to Accounts Receivable (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses beginning of period	$ 70,890	$ 59,963
Provision for credit losses	152,485	54,735
Write-offs	(138,939)	(51,273)
Recoveries	7,861	3,297
Impact of foreign currency	(8,415)	(2,057)
Allowance for credit losses end of period	$ 83,882	$ 64,665