Summary of Significant Accounting Policies - MEC - Schedule of Allowance for Credit Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Charged to operating costs and expenses, net	$ 43	$ 81	$ 56
Write-offs, net	(45)	(50)	(28)
MEC
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	12	12	5
Charged to operating costs and expenses, net	11	10	12
Write-offs, net	(9)	(10)	(5)
Ending balance	$ 14	$ 12	$ 12