Balance Sheet Components (Other Long-term Obligations) (Details) - USD ($) $ in Millions		Jun. 30, 2017	Dec. 31, 2016
Schedule of Other Noncurrent Liabilities [Line Items]
Employee benefit liabilities		$ 405.6	$ 396.7
Contingent consideration		466.0	564.6
Tax contingencies		247.7	239.3
Other		129.5	112.6
Other long-term obligations		1,366.4	1,358.6
Clean energy investments
Schedule of Other Noncurrent Liabilities [Line Items]
Other long-term obligations		275.5	302.3
Other long-term obligations
Schedule of Other Noncurrent Liabilities [Line Items]
Contingent consideration	[1]	$ 308.1	$ 307.7

[1] Included in other long-term obligations on the Condensed Consolidated Balance Sheets.