Benefit Plans (Accumulated Benefit Obligation) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 1,199	$ 1,306
Information for pension plans with an accumulated benefit obligation in excess of plan assets:
Projected benefit obligation	458	494
Accumulated benefit obligation	442	481
Fair value of plan assets	402	403
Information for pension plans with a projected benefit obligation in excess of plan assets:
Projected benefit obligation	458	494
Fair value of plan assets	402	403
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	165	199
Information for pension plans with an accumulated benefit obligation in excess of plan assets:
Projected benefit obligation	165	218
Accumulated benefit obligation	159	199
Fair value of plan assets	91	112
Information for pension plans with a projected benefit obligation in excess of plan assets:
Projected benefit obligation	165	218
Fair value of plan assets	$ 91	$ 112