Commitments and Contingencies - Expected Timing of Payments for Commitments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Less than one year	$ 7,949,544	$ 7,446,947
Due after one year and through three years	8,015,837	8,210,159
Due after three years and through five years	1,849,029	1,894,001
Due after five years	123,272	143,535
Total streaming content obligations	$ 17,937,682	$ 17,694,642