| Schedule of Debt |
| | | | | | | | | | ($ in millions) | | 2016 | | 2015 | Issue: | | | | | 5.65% Senior Notes Due 2020 (1) | | $ | 400 |
| | $ | 400 |
| 5.75% Senior Notes Due 2018 (1) | | 265 |
| | 300 |
| 5.875% Senior Secured Notes Due 2023 (1) | | 500 |
| | — |
| 6.375% Senior Notes Due 2036 (1) | | 388 |
| | 400 |
| 6.9% Notes Due 2026 | | 2 |
| | 2 |
| 7.125% Debentures Due 2023 | | 10 |
| | 10 |
| 7.4% Debentures Due 2037 | | 313 |
| | 326 |
| 7.625% Notes Due 2097 | | 500 |
| | 500 |
| 7.65% Debentures Due 2016 | | — |
| | 78 |
| 7.95% Debentures Due 2017 | | 220 |
| | 220 |
| 8.125% Senior Notes Due 2019 | | 400 |
| | 400 |
| 2016 Term Loan Facility | | 1,667 |
| | — |
| 2013 Term Loan Facility | | — |
| | 2,194 |
| Total debt, excluding unamortized debt issuance costs, capital leases, financing obligation and note payable | | 4,665 |
| | 4,830 |
| Unamortized debt issuance costs | | (63 | ) | | (61 | ) | Total debt, excluding capital leases, financing obligation and note payable | | 4,602 |
| | 4,769 |
| Less: current maturities | | 263 |
| | 101 |
| Total long-term debt, excluding capital leases, financing obligation and note payable | | $ | 4,339 |
| | $ | 4,668 |
| Weighted-average interest rate at year end | | 6.3 | % | | 6.5 | % | Weighted-average maturity (in years) | | 15 years |
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| | (1) | These debt issuances contain a change of control provision that would obligate us, at the holders’ option, to repurchase the debt at a price of 101%. These provisions trigger if there were a beneficial ownership change of 50% or more of our common stock. |
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