Summary of Significant Accounting Policies - EEGH - Schedule of Allowance for Credit Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Charged to operating costs and expenses, net	$ 81	$ 56	$ 47
Write-offs, net	(50)	(28)	(45)
EEGH
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	5	2	0
Charged to operating costs and expenses, net	1	4	2
Write-offs, net	0	(1)	0
Ending balance	$ 6	$ 5	$ 2