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Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Licenses
Balance, beginning of period	$ 1,470,769	$ 1,452,101
Acquisitions	122,690	4,406	[1]
Transferred to Assets held for sale	(140,599)
Exchanges		11,842
Other	3,934	2,420
Balance, end of period	1,456,794	1,470,769
Goodwill
Assigned value at time of acquisition	494,737	494,737
Balance, beginning of period	494,737
Transferred to Assets held for sale	(72,994)
Balance, end of period	$ 421,743	$ 494,737
[1] Does not include amounts reported as Assets held for sale in the Consolidated Balance Sheet as of December 31, 2011.

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Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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The aggregate amount of indefinite-lived intangible assets acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

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Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the capitalized costs to acquire rights under a license arrangement (for example, to sell specified products in a specified territory) having an indefinite period of benefit.

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Goodwill that is transferred to assets held for sale during the period.

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Licenses that were transferred to assets held for sale during the period.

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