Guarantees of Registered Securities (Narrative) (Details) - Jun. 30, 2015 - RCI (Issuer) [Member]	Total
Condensed Financial Statements, Captions [Line Items]
Subsidiary ownership percentage by parent	100.00%
Senior Notes due 2017 [Member] | Unsecured debt [Member]
Condensed Financial Statements, Captions [Line Items]
Stated interest rate percentage	5.00%
Senior Notes due 2019 [Member] | Unsecured debt [Member]
Condensed Financial Statements, Captions [Line Items]
Stated interest rate percentage	7.875%
Senior Notes due 2022 [Member] | Unsecured debt [Member]
Condensed Financial Statements, Captions [Line Items]
Stated interest rate percentage	4.875%
Senior Notes due 2024 [Member] | Unsecured debt [Member]
Condensed Financial Statements, Captions [Line Items]
Stated interest rate percentage	4.75%
Senior Notes due 2042 [Member] | Unsecured debt [Member]
Condensed Financial Statements, Captions [Line Items]
Stated interest rate percentage	5.40%
Senior Notes due 2044 [Member] | Unsecured debt [Member]
Condensed Financial Statements, Captions [Line Items]
Stated interest rate percentage	5.85%