Benefit Plans (Narrative) (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)
Retirement Benefits [Abstract]
Employer contributions		$ 60
Received a cash refund	$ 123
Anticipated additional employer contributions during the remainder of the current fiscal year	$ 53	$ 53