Debt - Narrative (Details) $ / shares in Units, shares in Millions				1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
	Jun. 15, 2021 shares	Mar. 23, 2021 USD ($)	Mar. 08, 2021 USD ($)	Aug. 30, 2018 USD ($) day $ / shares	Oct. 02, 2022 USD ($) renewal	Oct. 03, 2021 USD ($)	Jul. 04, 2021 USD ($)	Oct. 02, 2022 USD ($) renewal	Oct. 03, 2021 USD ($)	Jan. 02, 2022 USD ($)	Jan. 03, 2022 USD ($)	Dec. 30, 2018 USD ($)	Aug. 31, 2018	Aug. 21, 2018	Jun. 30, 2014 USD ($)
Debt Instrument [Line Items]
Decrease in additional paid-in capital					$ 9,129,000,000			$ 9,129,000,000		$ 8,938,000,000
Retained earnings (accumulated deficit)					1,281,000,000			$ 1,281,000,000		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]
Decrease in additional paid-in capital											$ (93,000,000)
Convertible debt											43,000,000
Retained earnings (accumulated deficit)											61,000,000
Decrease in deferred tax liabilities											$ 11,000,000
Term Notes
Debt Instrument [Line Items]
Net proceeds		$ 992,000,000
Redemption price (as a percent)								100.00%
Interest expense recognized					4,000,000	$ 4,000,000		$ 13,000,000	$ 9,000,000
Convertible Senior Notes
Debt Instrument [Line Items]
Interest expense recognized					1,000,000	$ 7,000,000		2,000,000	$ 21,000,000
Loss on extinguishment of debt							$ 1,000,000
2023 Term Notes | Term Notes
Debt Instrument [Line Items]
Stated rate (as a percent)		0.55%
Principal amount outstanding		$ 500,000,000			500,000,000			500,000,000		500,000,000
2031 Term Notes | Term Notes
Debt Instrument [Line Items]
Stated rate (as a percent)		2.55%
Principal amount outstanding		$ 500,000,000			500,000,000			500,000,000		500,000,000
2023 Convertible Notes | Convertible Senior Notes
Debt Instrument [Line Items]
Stated rate (as a percent)														0.00%
Principal amount outstanding				$ 750,000,000	$ 750,000,000			$ 750,000,000		750,000,000
Redemption price (as a percent)				100.00%
Debt Instrument, Convertible, Conversion Ratio				0.0021845
Conversion price (in dollars per share) | $ / shares				$ 457.77
Threshold common stock trading days (in days) | day				20
Threshold consecutive common stock trading days (in days) | day				30
Threshold percentage of common stock price trigger (as a percent)				130.00%
Threshold note trading days (in days) | day				5
Threshold consecutive note trading days (in days) | day				10
Threshold percentage of note price trigger (as a percent)				98.00%
Convertible stock price trigger (in dollars per share) | $ / shares				$ 595.10
Decrease in additional paid-in capital												$ 126,000,000
Debt instrument interest rate (as a percent)													3.70%
2021 Convertible Notes | Convertible Senior Notes
Debt Instrument [Line Items]
Stated rate (as a percent)															0.50%
Principal amount outstanding															$ 517,000,000
Interest expense recognized										$ 7,000,000
Number of shares of common stock issued upon conversion (in shares) | shares	0.7
The Credit Agreement | Line of Credit
Debt Instrument [Line Items]
Debt instrument term, number of renewal (in years) | renewal					2			2
Debt instrument, renewal term (in years)								1 year
Borrowings outstanding					$ 0			$ 0
The Credit Agreement | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 750,000,000
Debt instrument term (in years)			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