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Long-Term Debt (Narrative Redemptions and Restrictions) (Details) - Senior Notes - Indirect guarantee of indebtedness
Feb. 19, 2016
2019 Senior Notes  
Debt Instrument [Line Items]  
Debt instrument, redemption price, percentage of principal amount (as percent) 101.00%
2016 Senior Notes  
Debt Instrument [Line Items]  
Debt instrument, redemption price, percentage of principal amount (as percent) 101.00%