Goodwill And Other Intangible Assets (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) Reporting_Unit	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Goodwill [Line Items]
Reporting units for goodwill impairment testing | Reporting_Unit	5
Goodwill	$ 41,184	$ 35,420	$ 22,713
Impairment loss	$ 0	$ 0	0
Finite-lived intangible assets, weighted-average life (in years)	13 years	17 years
Asset impairment charges	$ 10	$ 22
Amortization of intangible assets	1,450	$ 1,138	$ 625
Future amortization expense, year one	1,500
Future amortization expense, year two	1,500
Future amortization expense, year three	1,500
Future amortization expense, year four	1,500
Future amortization expense, year five	1,400
Minimum
Goodwill [Line Items]
Goodwill	515
Maximum
Goodwill [Line Items]
Goodwill	$ 31,600