Stock Transactions And Stock-Based Compensation (Option Activity Under The Company's Stock Plans) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Options, Outstanding [Roll Forward]
Outstanding at beginning of year, options	17.0	18.6	18.8
Granted, options	2.9	4.3	4.1
Exercised, options	(3.5)	(3.5)	(3.4)
Cancelled/forfeited, options	(0.5)	(0.9)	(0.9)
Adjustment due to Envista Split-Off		(1.5)
Outstanding at end of year, options	15.9	17.0	18.6
Weighted Average Exercise Price, Outstanding [Roll Forward]
Outstanding as of beginning of year, weighted average exercise price	$ 82.95	$ 70.86	$ 59.84
Granted, weighted average exercise price	160.71	117.32	99.51
Exercised, weighted average exercise price	62.54	53.02	41.88
Cancelled/forfeited, weighted average exercise price	113.94	98.98	80.14
Adjustment due to Envista Split-Off, weighted average exercise price		91.65
Outstanding as of end of year, weighted average exercise price	$ 100.65	$ 82.95	$ 70.86
Vested and expected to vest at end of year, options	15.4
Vested at end of year, options	6.3
Vested and expected to vest at end of year, weighted average exercise price	$ 99.61
Vested at end of year, weighted average exercise price	$ 74.00
Outstanding at end of year, weighted average remaining contractual term (in years)	7 years
Vested and expected to vest at end of year, weighted average remaining contractual term (in years)	7 years
Vested at end of year, weighted average remaining contractual term (in years)	5 years
Outstanding at end of year, aggregate intrinsic value	$ 1,931
Vested and expected to vest at end of year, aggregate intrinsic value	1,887
Vested at end of year, aggregate intrinsic value	$ 940