Debt Obligations Senior Unsecured Notes (Details) (USD $)
In Millions, unless otherwise specified |
9 Months Ended | 12 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 9 Months Ended | |||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2014
|
Dec. 31, 2013
|
Sep. 30, 2014
5% Notes Due 2022 [Member]
|
Dec. 31, 2013
5% Notes Due 2022 [Member]
|
Sep. 17, 2012
5% Notes Due 2022 [Member]
|
Sep. 30, 2014
5% Notes Due 2022 [Member]
Twelve Month Period Commencing On July 15, 2017 [Member]
|
Sep. 30, 2014
5% Notes Due 2022 [Member]
Twelve Month Period Commencing On July 15, 2018 [Member]
|
Sep. 30, 2014
5% Notes Due 2022 [Member]
Twelve Month Period Commencing On July 15, 2019 [Member]
|
Sep. 30, 2014
5% Notes Due 2022 [Member]
Twelve Month Period Commencing On July 15, 2020 [Member]
|
Sep. 30, 2014
5% Notes Due 2022 [Member]
Prior to July 15, 2017 [Member]
|
Dec. 31, 2013
5% Notes Due 2022 [Member]
Prior to July 15, 2015 [Member]
|
Sep. 30, 2014
4.625% Notes Due 2021 [Member] [Member]
|
Dec. 31, 2013
4.625% Notes Due 2021 [Member] [Member]
|
Dec. 18, 2012
4.625% Notes Due 2021 [Member] [Member]
|
Sep. 30, 2014
4.625% Notes Due 2021 [Member] [Member]
Twelve Month Period Commencing On February 15, 2017 [Member]
|
Sep. 30, 2014
4.625% Notes Due 2021 [Member] [Member]
Twelve Month Period Commencing On February 15, 2018 [Member]
|
Sep. 30, 2014
4.625% Notes Due 2021 [Member] [Member]
Twelve Month Period Commencing On February 15, 2019 [Member]
|
Sep. 30, 2014
4.625% Notes Due 2021 [Member] [Member]
Prior To February 15, 2017 [Member]
|
Sep. 30, 2014
4.625% Notes Due 2021 [Member] [Member]
Prior to February 15, 2016 [Member]
|
Sep. 30, 2014
5.875% Notes due 2021 [Member]
|
Dec. 31, 2013
5.875% Notes due 2021 [Member]
|
Dec. 19, 2013
5.875% Notes due 2021 [Member]
|
Sep. 30, 2014
5.875% Notes due 2021 [Member]
Twelve Month Period Commencing On December 15, 2017 [Member]
|
Sep. 30, 2014
5.875% Notes due 2021 [Member]
Twelve Month Period Commencing On December 15, 2018 [Member]
|
Sep. 30, 2014
5.875% Notes due 2021 [Member]
Twelve Month Period Commencing On December 15, 2019 [Member]
|
Sep. 30, 2014
5.875% Notes due 2021 [Member]
Prior to December 15, 2016 [Member]
|
Sep. 30, 2014
6.375% Notes due 2023 [Member]
|
Dec. 31, 2013
6.375% Notes due 2023 [Member]
|
Dec. 19, 2013
6.375% Notes due 2023 [Member]
|
Sep. 30, 2014
6.375% Notes due 2023 [Member]
Twelve Month Period Commencing On December 15, 2018 [Member]
|
Sep. 30, 2014
6.375% Notes due 2023 [Member]
Twelve Month Period Commencing On December 15, 2019 [Member]
|
Sep. 30, 2014
6.375% Notes due 2023 [Member]
Twelve Month Period Commencing On December 15, 2020 [Member]
|
Sep. 30, 2014
6.375% Notes due 2023 [Member]
Prior To December 15, 2018 [Member]
|
Sep. 30, 2014
6.375% Notes due 2023 [Member]
Prior to December 15, 2016 [Member]
|
Sep. 30, 2014
6.375% Notes due 2023 [Member]
Twelve Month Period Commencing On December 15, 2021 [Member]
|
|
Debt Instrument [Line Items] | |||||||||||||||||||||||||||||||||||
Long-term Debt | $ 600 | $ 500 | |||||||||||||||||||||||||||||||||
Debt Instrument, Interest Rate, Stated Percentage | 5.00% | 4.625% | 5.875% | 6.375% | |||||||||||||||||||||||||||||||
Percentage of Principle Amount Notes Were Sold At | 100.00% | 100.00% | 100.00% | 100.00% | |||||||||||||||||||||||||||||||
Long-term debt | $ 3,660 | $ 3,320 | $ 600 | $ 600 | $ 500 | $ 500 | $ 400 | $ 400 | $ 400 | $ 700 | $ 700 | $ 700 | |||||||||||||||||||||||
Debt Instrument Redemption Price As Percentage Of Principle Amount | 102.50% | 101.667% | 100.833% | 100.00% | 100.00% | 105.00% | 102.313% | 101.156% | 100.00% | 100.00% | 104.625% | 102.938% | 101.469% | 100.00% | 105.875% | 103.188% | 102.125% | 101.063% | 100.00% | 106.375% | 100.00% | ||||||||||||||
Debt Instrument, Note Redemption, Percentage of Aggregate Principle Amount | 35.00% | 35.00% | 35.00% | 35.00% |