Stock Transactions And Stock-Based Compensation Summary of Share Activity (Details) - shares shares in Millions		12 Months Ended
	Sep. 20, 2019	Dec. 31, 2019	Dec. 31, 2018
Stock Activity [Roll Forward]
Shares issued to Danaher	127.9
Common Stock
Stock Activity [Roll Forward]
Balance, beginning of period		0.0	0.0
Shares issued to Danaher		127.9	0.0
Issuance of common stock		30.8	0.0
Balance, end of period		158.7	0.0