|
Intangible Assets (Intangible Assets) (Details) (USD $)
|
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
|
| Indefinite-Lived Intangible Assets (Excluding Goodwill) | $ 18,000,000 | |
| Gross Carrying Value | 1,091,405,000 | 1,205,450,000 |
| Accumulated Amortization | (287,281,000) | (243,081,000) |
| Net Carrying Value | 804,124,000 | 962,369,000 |
| Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 15 years | |
| Licenses [Member] | ||
| Gross Carrying Value | 1,091,405,000 | 1,205,450,000 |
| Accumulated Amortization | (287,281,000) | (243,081,000) |
| Net Carrying Value | $ 804,124,000 | $ 962,369,000 |