Fair Value Measurements (Assets and Liabilities on a Nonrecurring Basis) (Details) (Other Income (Expense) [Member], Nonrecurring [Member], Level 3 [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Other Income (Expense) [Member] | Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost method investment, impairment charge included other income	$ 3.2