Balance Sheet Components (Other Current Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule of other current liabilities [Line Items]
Other receivables	$ 464.5	$ 439.3
Employee-related Liabilities, Current	399.7	404.6
Estimated Litigation Liability, Current	128.1	241.1
Business Combination, Contingent Consideration, Liability	355.3	453.7	$ 564.6
Restructuring Reserve, Current	62.3	91.5
Accrued interest	62.4	42.3
Liability derivatives, fair value	29.4
Other Accrued Liabilities, Current	635.6	1,111.4
Other current liabilities	2,147.6	2,964.5
Clean energy investments
Schedule of other current liabilities [Line Items]
Other current liabilities	45.1	56.7
Other current liabilities
Schedule of other current liabilities [Line Items]
Business Combination, Contingent Consideration, Liability	$ 158.3	$ 167.8	$ 256.9	[1]

[1] Included in other current liabilities on the Consolidated Balance Sheets.