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Long-Term Debt (Debt) (Details) (USD $)
In Millions, unless otherwise specified |
Sep. 30, 2014
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Dec. 31, 2013
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|---|---|---|
| Debt Instrument [Line Items] | ||
| Debt and capital lease obligations | $ 4,145 | $ 3,813 |
| Current portion of debt and capital lease obligations | (10) | (13) |
| Long-term portion of debt and capital lease obligations | 4,135 | 3,800 |
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7.5% Senior Secured Notes due 2019, net of original issue discount
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| Debt Instrument [Line Items] | ||
| Debt and capital lease obligations | 0 | 761 |
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3.125% Senior Secured Notes due 2019, net of original issue discount
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| Debt Instrument [Line Items] | ||
| Debt and capital lease obligations | 399 | 0 |
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7.375% Senior Secured Notes due 2020
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| Debt Instrument [Line Items] | ||
| Debt and capital lease obligations | 500 | 500 |
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5.125% Senior Secured Notes due 2022
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| Debt Instrument [Line Items] | ||
| Debt and capital lease obligations | 500 | 500 |
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4.375% Senior Secured Notes due 2023, net of original issue discount
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| Debt Instrument [Line Items] | ||
| Debt and capital lease obligations | 750 | 750 |
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4.85% Senior Secured Notes due 2024, net of original issue discount
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| Debt Instrument [Line Items] | ||
| Debt and capital lease obligations | 600 | 0 |
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4.45% Senior Secured Notes due 2025, net of original issue discount
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| Debt Instrument [Line Items] | ||
| Debt and capital lease obligations | 599 | 0 |
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5.45% Senior Secured Notes due 2034, net of original issue discount
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| Debt Instrument [Line Items] | ||
| Debt and capital lease obligations | 399 | 0 |
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5.95% Senior Secured Notes due 2043, net of original issue discount
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| Debt Instrument [Line Items] | ||
| Debt and capital lease obligations | 300 | 300 |
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Senior secured credit facility
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| Debt Instrument [Line Items] | ||
| Debt and capital lease obligations | 32 | 922 |
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Capital lease obligations
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| Debt Instrument [Line Items] | ||
| Debt and capital lease obligations | $ 66 | $ 80 |