Goodwill And Other Intangible Assets (Narrative) (Details) $ in Millions		12 Months Ended
	Dec. 31, 2018 USD ($) Reporting_Unit	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Goodwill [Line Items]
Reporting units for goodwill impairment testing | Reporting_Unit	8
Goodwill	$ 25,906.0	$ 25,906.0	$ 25,138.6	$ 23,826.9
Impairment loss		$ 0.0	$ 0.0	0.0
Finite-lived intangible assets, weighted-average life (in years)		18 years	9 years
Total intangible amortization expense		$ 706.0	$ 661.0	$ 583.0
Future amortization expense, year one	720.0	720.0
Future amortization expense, year two	709.0	709.0
Future amortization expense, year three	694.0	694.0
Future amortization expense, year four	673.0	673.0
Future amortization expense, year five	665.0	665.0
Minimum
Goodwill [Line Items]
Goodwill	511.0	511.0
Maximum
Goodwill [Line Items]
Goodwill	$ 13,300.0	$ 13,300.0