A summary of the carrying amounts and fair values of our long-term debt is listed below. | | | | | | | | | | | | | | | | | | | | Effective Interest Rate | | March 31,
2017 | | December 31,
2016 | Book Value | | Fair Value 1 | | Book Value | | Fair Value 1 | 2.25% Senior Notes due 2017 (less unamortized discount and issuance costs of $0.1 and $0.3, respectively) | 2.30% | | $ | 299.6 |
| | $ | 301.4 |
| | $ | 299.4 |
| | $ | 301.4 |
| 4.00% Senior Notes due 2022 (less unamortized discount and issuance costs of $1.5 and $1.3, respectively) | 4.13% | | 247.2 |
| | 260.2 |
| | 247.0 |
| | 258.4 |
| 3.75% Senior Notes due 2023 (less unamortized discount and issuance costs of $0.9 and $2.4, respectively) | 4.32% | | 496.7 |
| | 507.3 |
| | 496.6 |
| | 503.3 |
| 4.20% Senior Notes due 2024 (less unamortized discount and issuance costs of $0.7 and $2.9, respectively) | 4.24% | | 496.4 |
| | 516.3 |
| | 496.2 |
| | 511.6 |
| Other notes payable and capitalized leases | | | 66.1 |
| | 66.1 |
| | 65.4 |
| | 65.4 |
| Total long-term debt | | | 1,606.0 |
| | | | 1,604.6 |
| | | Less: current portion | | | 324.1 |
| | | | 323.9 |
| | | Long-term debt, excluding current portion | | | $ | 1,281.9 |
| | | | $ | 1,280.7 |
| | |
| | 1 | See Note 10 for information on the fair value measurement of our long-term debt. |
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