For the Years Ended December 31, | ||||||||||||
2013 | 2012 | 2011 | ||||||||||
Gain on disposition of assets (a) | $ | 67,480 | $ | 282,006 | $ | 45,673 | ||||||
Equity in earnings of affiliates | 33,133 | 27,048 | 24,663 | |||||||||
Royalty income | 16,906 | 16,853 | 17,969 | |||||||||
Interest income | 15,889 | 28,937 | 8,919 | |||||||||
Pennsylvania Turnpike Settlement | 9,000 | — | — | |||||||||
Right-of-way issuance | 4,536 | 3,966 | 12,157 | |||||||||
Other | 32,019 | 36,366 | 29,751 | |||||||||
Total Other Income | $ | 178,963 | $ | 395,176 | $ | 139,132 | ||||||