Geographic and Customer Concentrations - Assets from Geographic Region (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	$ 28,095	$ 28,576
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	23,296	23,511
Europe, Middle East and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	2,830	3,059
Latin America
Revenues from External Customers and Long-Lived Assets [Line Items]
Assets	$ 1,969	$ 2,006