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Investments in Unconsolidated Entities (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2012
Equity and cost method investments |  |  |  |  |
Investments in unconsolidated entities | $ 276,363 |  | $ 276,363 |  | $ 144,531
Equity in earnings of unconsolidated entities | 35,602 | 25,154 | 62,437 | 46,768 |
Equity method investments, combined income statements |  |  |  |  |
Revenues | 1,544,564 | 1,420,492 | 3,037,290 | 2,851,865 |
Operating expenses | 1,095,809 | 1,014,995 | 2,162,776 | 2,086,883 |
Operating income | 448,755 | 405,497 | 874,514 | 764,982 |
Other income, net | 1,113 | 1,320 | 1,701 | 2,236 |
Net income | 449,868 | 406,817 | 876,215 | 767,218 |
Los Angeles SMSA Limited Partnership |  |  |  |  |
Equity and cost method investments |  |  |  |  |
Equity in earnings of unconsolidated entities | $ 19,800 | $ 19,200 | $ 40,400 | $ 36,300 |
Ownership interest in equity method investment | 5.50% | 5.50% | 5.50% | 5.50% |

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