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Lease Obligations (Tables) | 12 Months Ended
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Dec. 31, 2013
Leases [Abstract] |
Schedule of Future Minimum Lease Commitments | Future minimum lease commitments under capital leases and non-cancelable operating leases, including the effect of escalation clauses in effect as of December 31, 2013, were as follows (in millions):
| Capital Leases |  | Operating Leases
2014 | $ | 44.1 |  |  | $ | 54.3 |
2015 | 35.6 |  |  | 43.8 |
2016 | 27.1 |  |  | 25.0 |
2017 | 19.5 |  |  | 12.0 |
2018 | 6.9 |  |  | 5.2 |
Thereafter | 0.9 |  |  | 5.3 |
Total minimum lease payments | $ | 134.1 |  |  | $ | 145.6 |
Less amounts representing interest | (8.1 | ) |  |
Total capital lease obligations, net of interest | $ | 126.0 |  |  |
Less current portion | (41.3 | ) |  |
Long term portion of capital lease obligations, net of interest | $ | 84.7 |  |  |

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