Landfill and Environmental Costs (Expected Undiscounted Future Payments for Remediation Costs) (Details) $ in Millions |
12 Months Ended |
---|---|
Dec. 31, 2015
USD ($)
| |
Environmental Remediation Obligations [Abstract] | |
2016 | $ 62.4 |
2017 | 89.3 |
2018 | 62.9 |
2019 | 64.8 |
2020 | 62.4 |
Thereafter | 546.5 |
Total expected undiscounted future payments for remediation | $ 888.3 |