Segment Information - Information On Reportable Segments And Reconciliation To Consolidated Net Income (Details) subscription in Thousands, membership in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($) subscription membership	Jun. 30, 2018 USD ($) subscription membership	Jun. 30, 2019 USD ($) subscription membership	Jun. 30, 2018 USD ($) subscription membership
Segment Reporting Information [Line Items]
Revenues	$ 4,923,116	$ 3,907,270	$ 9,444,108	$ 7,608,126
Cost of revenues	3,005,657	2,402,431	5,876,271	4,703,010
Marketing	603,150	592,007	1,219,728	1,128,784
Contribution profit	1,314,309	912,832	2,348,109	1,776,332
Other operating expenses	607,890	450,619	1,182,606	867,541
Operating income	706,419	462,213	1,165,503	908,791
Other income (expense)	(205,503)	(33,577)	(264,928)	(180,539)
Provision for income taxes	230,266	44,287	285,873	53,779
Net income	270,650	384,349	614,702	674,473
Amortization of content assets	$ 2,239,571	$ 1,828,971	$ 4,372,766	$ 3,588,949
Domestic Streaming
Segment Reporting Information [Line Items]
Total paid memberships at end of period | subscription	60,103	55,959	60,103	55,959
Total paid net membership additions (losses) | membership	(126)	872	1,617	3,149
Total free trials at end of period | membership	1,575	1,420	1,575	1,420
Revenues	$ 2,299,189	$ 1,893,222	$ 4,372,744	$ 3,713,241
Cost of revenues	1,196,420	969,995	2,335,955	1,906,475
Marketing	250,606	251,298	471,652	502,017
Contribution profit	852,163	671,929	1,565,137	1,304,749
Amortization of content assets	$ 916,494	$ 751,947	$ 1,780,805	$ 1,482,219
International Streaming
Segment Reporting Information [Line Items]
Total paid memberships at end of period | subscription	91,459	68,395	91,459	68,395
Total paid net membership additions (losses) | membership	2,825	4,580	10,686	10,561
Total free trials at end of period | membership	4,481	4,367	4,481	4,367
Revenues	$ 2,547,727	$ 1,921,144	$ 4,914,476	$ 3,703,230
Cost of revenues	1,778,890	1,392,512	3,476,011	2,714,218
Marketing	352,544	340,709	748,076	626,767
Contribution profit	416,293	187,923	690,389	362,245
Amortization of content assets	$ 1,315,421	$ 1,065,870	$ 2,575,796	$ 2,084,442
Domestic DVD
Segment Reporting Information [Line Items]
Total paid memberships at end of period | subscription	2,411	2,971	2,411	2,971
Total paid net membership additions (losses) | membership	(154)	(167)	(295)	(359)
Total free trials at end of period | membership	17	28	17	28
Revenues	$ 76,200	$ 92,904	$ 156,888	$ 191,655
Cost of revenues	30,347	39,924	64,305	82,317
Marketing	0	0	0	0
Contribution profit	45,853	52,980	92,583	109,338
Amortization of content assets	$ 7,656	$ 11,154	$ 16,165	$ 22,288