Stockbased Compensation, Stock Option Disclosures (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected Stock Price Volatility	26.00%	22.00%	21.00%
Risk Free Interest Rate	0.80%	1.10%	2.40%
Expected Life of Options (years)	4 years 3 months 18 days	4 years 3 months 18 days	4 years 3 months 18 days
Expected Annual Dividend	0.20%	0.30%	0.30%
Weighted Average Grant Date Fair Value of Options Granted in Period (in dollars per share)	$ 123.97	$ 61.19	$ 53.37
Total Intrinsic Value of Options Exercised in Period	$ 501	$ 457	$ 320
Options Outstanding [Roll Forward]
Options Outstanding, Beginning Balance	5.9
Granted	1.5
Issued in connection with an acquisition	0.2
Exercised	(1.4)
Canceled / Expired	(0.2)
Options Outstanding, Ending Balance	6.0	5.9
Options, Additional Disclosures [Abstract]
Options Outstanding, Weighted Average Exercise Price, Beginning of Period (in dollars per share)	$ 221.22
Grants in Period, Weighted Average Exercise Price (in dollars per share)	552.26
Issued in Connection with an Acquisition in Period, Weighted Average Exercise Price (in dollars per share)	492.35
Exercises in Period, Weighted Average Exercise Price (in dollars per share)	183.63
Canceled / Expired in Period, Weighted Average Exercise Price (in dollars per share)	341.83
Options Outstanding, Weighted Average Exercise Price, End of Period (in dollars per share)	$ 319.95	$ 221.22
Options Outstanding, Weighted Average Remaining Contractual Term	4 years 6 months
Options Outstanding, Aggregate Intrinsic Value	$ 2,094
Options Vested and Unvested Expected to Vest	5.7
Options Vested and Unvested Expected to Vest, Weighted Average Exercise Price (in dollars per share)	$ 306.64
Options Vested and Unvested Expected to Vest, Weighted Average Remaining Contractual Term	4 years 3 months 18 days
Options Vested and Unvested Expected to Vest, Aggregate Intrinsic Value	$ 2,035
Options Exercisable	2.8
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 193.39
Options Exercisable, Weighted Average Remaining Contractual Term	2 years 10 months 24 days
Options Exercisable, Intrinsic Value	$ 1,307
Share-based Payment Arrangement, Option [Member]
Options, Additional Disclosures [Abstract]
Unrecognized Compensation Costs On Nonvested Awards	$ 243
Unrecognized Compensation Costs On Nonvested Awards, Weighted Average Period Of Recognition	2 years 10 months 24 days
Minimum [Member] | Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Requisite Service Period	3 years
Option Term	7 years
Maximum [Member] | Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Requisite Service Period	5 years
Option Term	10 years