Formation Of Joint Venture (Historical Financial Details Of Buisnesses Contributed To A Joint Venture) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009
Formation Of Joint Venture [Abstract]
Sales	$ 315.6	$ 607.9
Operating profit	$ 41.5	$ 63.9

Operating profit of the businesses contributed to the joint venture reflected in company results prior to joint venture formation for the indicated period.

No definition available.

Name:	dhr_OperatingProfitGeneratedByContributedBusiness
Namespace Prefix:	dhr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration