Future minimum capital lease payments at December 31, 2013 are as follows (millions):
| 2014 | $ | 15 | ||
| 2015 | 13 | |||
| 2016 | 11 | |||
| 2017 | 11 | |||
| 2018 | 11 | |||
| Thereafter | 20 | |||
| Total | 81 | |||
| Amount representing interest | (15) | |||
| Present value of minimum lease payments | 66 | |||
| Current portion | (10) | |||
| Total long-term portion | $ | 56 |