Commitments and Contingencies - Streaming Content - Narrative (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Contractual Obligation [Line Items]
Streaming obligations included in current content liabilities	$ 9,780,262,000us-gaap_PurchaseObligation	$ 9,451,112,000us-gaap_PurchaseObligation
Streaming obligations not reflected on Consolidated Balance Sheets	5,500,000,000	5,800,000,000
Current Content Liabilities [Member]
Contractual Obligation [Line Items]
Streaming obligations included in non-current content liabilities	2,400,000,000	2,100,000,000
Non-current Content Liabilities [Member]
Contractual Obligation [Line Items]
Streaming obligations included in non-current content liabilities	$ 1,900,000,000	$ 1,600,000,000

Name:	nflx_ContractualObligationLineItems
Namespace Prefix:	nflx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

+ References

No definition available.

+ Details

Name:	us-gaap_PurchaseObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25383-109308

+ Details

Name:	us-gaap_RecordedUnconditionalPurchaseObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25336-109308

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_BalanceSheetLocationAxis=nflx_CurrentContentLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BalanceSheetLocationAxis=nflx_NoncurrentContentLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: