Stockholders' Equity - Share-based Compensation Plans (Details)		12 Months Ended
Jan. 01, 2020 shares	Dec. 31, 2019 plans shares
Share-based Compensation Arrangement by Share-based Payment Award
Share-based employee compensation plans, number \| plans		2
2012 Plan
Share-based Compensation Arrangement by Share-based Payment Award
2012 equity incentive plan shares reserved for future issuance (in shares)		111,000,000
Shares reserved for issuance increase (in percentage)		2.50%
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award
Shares reserved for issuance (in shares)	60,000,000
Restricted Stock Units (RSUs) \| 2012 Plan
Share-based Compensation Arrangement by Share-based Payment Award
Share-based compensation arrangement by share-based payment award, award vesting period		4 years

Share-based Employee Compensation Plans, Number

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- Definition

Shares Reserved For Issuance Increase Percentage

+ References

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Number of additional shares authorized for issuance under share-based payment arrangement.

+ References

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