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Balance Sheet Components (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 04, 2013
Schedule of Equity Method Investments [Line Items]
Other current liabilities	$ 470.0
Restricted cash and cash equivalents, current	134.1	129.5
Other long-term obligations	1,336.7us-gaap_OtherLiabilitiesNoncurrent	1,269.1us-gaap_OtherLiabilitiesNoncurrent
Other current liabilities	1,434.1us-gaap_OtherLiabilitiesCurrent	1,396.6us-gaap_OtherLiabilitiesCurrent
Agila Specialties
Schedule of Equity Method Investments [Line Items]
Other current liabilities			230.0
Other assets (including equity method investment)			152.8
Clean energy investments
Schedule of Equity Method Investments [Line Items]
Other Liabilities	472.7	415.4
Other long-term obligations	412.9
Other current liabilities	59.8
Other current liabilities
Schedule of Equity Method Investments [Line Items]
Other current liabilities	20.0	250.0
Other long-term obligations
Schedule of Equity Method Investments [Line Items]
Other current liabilities	450.0	414.6
Other assets
Schedule of Equity Method Investments [Line Items]
Restricted cash and cash equivalents	100.0	100.0
Other assets \| Clean energy investments
Schedule of Equity Method Investments [Line Items]
Equity method investments	437.5	401.7
Other assets \| Sagent Agila
Schedule of Equity Method Investments [Line Items]
Equity method investments	109.9	123.2
Equity method investments \| Agila Specialties
Schedule of Equity Method Investments [Line Items]
Other assets (including equity method investment)			$ 125.0
Equity method investments \| Sagent Agila \| Agila Specialties
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage			50.00%