Debt - Senior Notes and Contingent Convertible Senior Notes Purchased ( Table Phantom) (Details)	Sep. 30, 2013
7.625% Senior Notes Due 2013
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.625%
6.625% Senior Notes Due 2019
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.625%
Term Loan [Member] | Senior Secured Term Loan Due Two Thousand And Seventeen [Member]
Long-Term Debt Instrument [Line Items]
Debt Instrument Maturity Year	2017
Senior Notes | 7.625% Senior Notes Due 2013
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.625%
Debt Instrument Maturity Year	2013
Senior Notes | 9.5% Senior Notes Due 2015
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	9.50%
Debt Instrument Maturity Year	2015
Senior Notes | 3.25% Senior Notes due 2016
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.25%
Debt Instrument Maturity Year	2016
Senior Notes | 6.5% Senior Notes Due 2017
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.50%
Debt Instrument Maturity Year	2017
Senior Notes | 6.875% Senior Notes Due 2018
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.875%
Debt Instrument Maturity Year	2018
Senior Notes | 7.25% Senior Notes Due 2018
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.25%
Debt Instrument Maturity Year	2018
Senior Notes | 6.625% Senior Notes Due 2019
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.625%
Debt Instrument Maturity Year	2019
Senior Notes | 6.775% Senior Notes Due 2019
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.775%
Debt Instrument Maturity Year	2019
Senior Notes | 6.625% Senior Notes Due 2020
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.625%
Debt Instrument Maturity Year	2020
Senior Notes | 6.875% Senior Notes Due 2020
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.875%
Debt Instrument Maturity Year	2020
Senior Notes | 5.375% Senior Notes due 2021 [Member]
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.375%
Debt Instrument Maturity Year	2021
Senior Notes | 6.125% Senior Notes Due 2021
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.125%
Debt Instrument Maturity Year	2021
Senior Notes | 5.75% Senior Notes due 2023 [Member]
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.75%
Debt Instrument Maturity Year	2023
Senior Notes | 2.75% Contingent Convertible Senior Notes Due 2035
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.75%
Debt Instrument Maturity Year	2035
Senior Notes | 2.5% Contingent Convertible Senior Notes due 2037
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.50%
Debt Instrument Maturity Year	2037
Senior Notes | 2.25% Contingent Convertible Senior Notes Due 2038
Long-Term Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.25%
Debt Instrument Maturity Year	2038