Segment Information Geographic Areas (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	$ 1,766,000,000	$ 2,184,000,000
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	238,000,000	306,000,000
North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	324,000,000	403,000,000
Latin America
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	265,000,000	289,000,000
Europe/Sub-Sahara Africa/Russia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	337,000,000	463,000,000
Middle East/North Africa/Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	840,000,000	1,029,000,000
IRELAND
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	$ 0	$ 0