Commitments and Contingencies, Legal Proceedings (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013
Loss Contingencies [Line Items]
Settlement including interest with the IRS related to intercompany R&D cost sharing arrangement	$ 19.6
2011 California State Derivative Lawsuits [Member]
Loss Contingencies [Line Items]
Number of purported shareholder derivative actions	4
2011 Federal Derivative Lawsuit [Member]
Loss Contingencies [Line Items]
Number of purported shareholder derivative actions	2