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Debt - Narrative (Details) $ / shares in Units, shares in Millions |  |  |  | 1 Months Ended | 3 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 15, 2021 shares | Mar. 23, 2021 USD ($) | Mar. 08, 2021 USD ($) | Aug. 30, 2018 USD ($) day $ / shares | Apr. 03, 2022 USD ($) renewal | Apr. 04, 2021 USD ($) | Jan. 03, 2022 USD ($) | Jan. 02, 2022 USD ($) | Dec. 30, 2018 USD ($) | Aug. 31, 2018 | Aug. 21, 2018 | Jun. 30, 2014 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Additional paid-in capital |  |  |  |  | $ 8,957,000,000 |  |  | $ 8,938,000,000 |  |  |  |
Retained earnings (accumulated deficit) |  |  |  |  | $ 5,632,000,000 |  |  | 5,485,000,000 |  |  |  |
Cumulative-effect adjustment from adoption of ASU 2016-02, net of deferred tax | Accounting Standards Update 2020-06 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Additional paid-in capital |  |  |  |  |  |  | $ (93,000,000) |  |  |  |  |
Convertible debt |  |  |  |  |  |  | 43,000,000 |  |  |  |  |
Retained earnings (accumulated deficit) |  |  |  |  |  |  | 61,000,000 |  |  |  |  |
Deferred tax liabilities |  |  |  |  |  |  | $ (11,000,000) |  |  |  |  |
Term Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds |  | $ 992,000,000 |  |  |  |  |  |  |  |  |  |
Redemption price, percentage |  |  |  |  | 100.00% |  |  |  |  |  |  |
Interest expense recognized |  |  |  |  | $ 4,000,000 | $ 1,000,000 |  |  |  |  |  |
Convertible Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest expense recognized |  |  |  |  | 1,000,000 | 7,000,000 |  |  |  |  |  |
2023 Term Notes | Term Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated rate |  | 0.55% |  |  |  |  |  |  |  |  |  |
Principal amount of notes outstanding |  | $ 500,000,000 |  |  | 500,000,000 |  |  | 500,000,000 |  |  |  |
2031 Term Notes | Term Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated rate |  | 2.55% |  |  |  |  |  |  |  |  |  |
Principal amount of notes outstanding |  | $ 500,000,000 |  |  | 500,000,000 |  |  | 500,000,000 |  |  |  |
2023 Convertible Notes | Convertible Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated rate |  |  |  |  |  |  |  |  |  |  | 0.00% |
Principal amount of notes outstanding |  |  |  | $ 750,000,000 | $ 750,000,000 |  |  | $ 750,000,000 |  |  |  |
Redemption price, percentage |  |  |  | 100.00% |  |  |  |  |  |  |  |
Conversion price (in dollars per share) | $ / shares |  |  |  | $ 457.77 |  |  |  |  |  |  |  |
Threshold common stock trading days | day |  |  |  | 20 |  |  |  |  |  |  |  |
Threshold consecutive common stock trading days | day |  |  |  | 30 |  |  |  |  |  |  |  |
Threshold percentage of common stock price trigger |  |  |  | 130.00% |  |  |  |  |  |  |  |
Threshold note trading days | day |  |  |  | 5 |  |  |  |  |  |  |  |
Threshold consecutive note trading days | day |  |  |  | 10 |  |  |  |  |  |  |  |
Threshold percentage of note price trigger |  |  |  | 98.00% |  |  |  |  |  |  |  |
Convertible stock price trigger (in dollars per share) | $ / shares |  |  |  | $ 595.10 |  |  |  |  |  |  |  |
Additional paid-in capital |  |  |  |  |  |  |  |  | $ 126,000,000 |  |  |
Effective interest rate used to measure fair value of convertible senior note |  |  |  |  |  |  |  |  |  | 3.70% |  |
2021 Convertible Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest expense recognized |  |  |  |  |  | $ 4,000,000 |  |  |  |  |  |
Number of shares of common stock issued upon conversion (in shares) | shares | 0.7 |  |  |  |  |  |  |  |  |  |  |
2021 Convertible Notes | Convertible Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated rate |  |  |  |  |  |  |  |  |  |  |  | 0.50%
Principal amount of notes outstanding |  |  |  |  |  |  |  |  |  |  |  | $ 517,000,000
The Credit Agreement | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument term, number of renewal | renewal |  |  |  |  | 2 |  |  |  |  |  |  |
Debt instrument, renewal term |  |  |  |  | 1 year |  |  |  |  |  |  |
Borrowings outstanding |  |  |  |  | $ 0 |  |  |  |  |  |  |
The Credit Agreement | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 750,000,000 |  |  |  |  |  |  |  |  |
Debt instrument term |  |  | 5 years |  |  |  |  |  |  |  |  |
The Credit Agreement | Line of Credit | Swingline Borrowings |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 40,000,000 |  |  |  |  |  |  |  |  |
The Credit Agreement | Line of Credit | Letter of Credit |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | 50,000,000 |  |  |  |  |  |  |  |  |
The Credit Agreement | Unsecured Debt |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount, optional increase in additional borrowings |  |  | $ 250,000,000 |  |  |  |  |  |  |  |  |
Debt instrument, covenant, minimum debt to EBITDA ratio |  |  | 3.50 |  |  |  |  |  |  |  |  |
Debt instrument, covenant, minimum debt to EBITDA ratio upon consummation of acquisition |  |  | 4.00 |  |  |  |  |  |  |  |  |

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