Commitments and Contingencies (Expected Timing Of Payments For Commitments) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Less than one year	$ 2,376,260	$ 2,299,562
Due after one year and through 3 years	2,696,896	2,715,294
Due after 3 years and through 5 years	535,617	540,346
Due after 5 years	63,713	78,483
Total streaming content obligations	$ 5,672,486	$ 5,633,685