Subsequent Events (Details) $ in Millions	6 Months Ended
	Jun. 30, 2016 employee	Jul. 01, 2016	Feb. 01, 2016 USD ($)	Dec. 31, 2015 USD ($)
Subsequent Event [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 2,250
Subsequent Event [Member]
Subsequent Event [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 2,000
Revolving Credit Facility [Member] | Maximum [Member]
Subsequent Event [Line Items]
Ratio of Indebtedness to Net Capital				0.6
Revolving Credit Facility [Member] | Maximum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Ratio of Indebtedness to Net Capital	0.7	0.6
Scenario, Forecast [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated | employee	6,000