Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Narrative) (Details)

v3.4.0.3
Long-Term Debt (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 09, 2015
Debt Instrument [Line Items]      
Line of Credit Facility, Remaining Borrowing Capacity $ 355.8    
Line of Credit Facility, Interest Rate at Period End 2.20%    
Dividends paid to Liberty $ (234.0) $ (59.0)  
Line of Credit Facility, Maximum Borrowing Capacity     $ 2,250.0
Line of Credit Facility, Standby Letter of Credit     250.0
Line of credit facility, uncommitted loan     $ 1,500.0
Debt Instrument, Lower Range of Basis Spread on Variable Rate     0.25%
Debt Instrument, Higher Range of Basis Spread on Variable Rate     1.75%
Debt, Weighted Average Interest Rate 3.80%