Accumulated Other Comprehensive Loss (Narrative) (Details) - Defined benefit pension plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net realized losses reclassified to income from continuing operations, net of tax	$ 115	$ 1
Net realized losses reclassified to income from continuing operations, before tax	71	1
Net realized gains reclassified to income from continuing operations, tax	44	$ 0
Stranded tax effects	$ 61