Stock Transactions And Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	12 Months Ended
	Mar. 01, 2019	May 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jul. 16, 2013
Repurchase of common stock authorized, shares						20,000,000
Stock repurchase program, remaining number of shares authorized to be repurchased, shares			20,000,000
Proceeds from the public offering of common stock, net of issuance costs			$ 1,729	$ 1,443	$ 0
Proceeds from the public offering of preferred stock, net of issuance costs			$ 1,668	1,600	0
Total number of authorized shares to be issued under the 2007 Omnibus Incentive Plan, shares			127,000,000
Common shares reserved for issuance under the 2007 Omnibus Incentive Plan, shares			54,000,000
Aggregate intrinsic value of options exercised			$ 415	266	202
Cash receipts due to exercise of options			211	179	133
Employee service share-based compensation, tax benefit from exercise of stock options			110	79	57
Tax benefit			$ 85	$ 55	38
Aggregate number of shares withheld to satisfy tax requirement			352,000	402,000
Aggregate value of shares withheld to satisfy tax requirement			$ 58	$ 49
Envista Split-Off | Envista Separation
Shares repurchased				22,900,000
Stock options
Vesting period			5 years
Total unrecognized compensation cost			$ 167
Weighted average period for cost to be recognized (in years)			3 years
Employee service share-based compensation, tax benefit from exercise of stock options			$ 82	$ 51	40
Stock option term (in years)			10 years
RSUs/PSUs
Vesting period			5 years
Total unrecognized compensation cost			$ 168
Weighted average period for cost to be recognized (in years)			2 years
Employee service share-based compensation, tax benefit from exercise of stock options			$ 18	$ 25	$ 17
Common stock
Issuance of stock		10,900,000
Shares issued, price per share		$ 163.00
Common stock
Issuance of stock	12,100,000		10,900,000	12,100,000	0
Shares issued, price per share	$ 123.00
Proceeds from the public offering of common stock, net of issuance costs	$ 1,400	$ 1,730
Payments of stock issuance costs	$ 45	54
Threshold consecutive trading days	20
Conversion of stock, shares issued			132
Preferred stock
Issuance of stock			1,700,000	1,700,000	0
Preferred stock | Series B Preferred Stock
Payments of stock issuance costs		$ 49
Preferred stock, shares issued		1,720,000	1,720,000	0
Preferred stock, dividend rate, percentage		5.00%	5.00%
Preferred stock, liquidation preference per share		$ 1,000	$ 1,000
Proceeds from the public offering of preferred stock, net of issuance costs		$ 1,670
Preferred stock | Series A Preferred Stock
Payments of stock issuance costs	$ 50
Preferred stock, shares issued	1,650,000		1,650,000	1,650,000
Preferred stock, dividend rate, percentage	4.75%		4.75%	4.75%
Preferred stock, liquidation preference per share	$ 1,000		$ 1,000
Proceeds from the public offering of preferred stock, net of issuance costs	$ 1,600
Conversion of stock, shares converted			20