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Debt Instrument Convertible Observation Period

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Threshold period of specified consecutive trading days within which note price to conversion value of convertible debt instruments must not exceed threshold percentage for a specified number of trading days to trigger conversion feature.

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Threshold number of specified trading days that note price to conversion value of convertible debt instruments must not exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

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Maximum percentage of note price to conversion value of convertible debt instruments to determine eligibility of conversion.

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Debt Instrument, Covenant, Minimum Debt to EBITDA Ratio

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Debt Instrument, Covenant, Minimum Debt To EBITDA Ratio Upon Consummation Of Acquisition

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Debt Instrument, Face Amount, Optional Increase In Additional Borrowings

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Debt Instrument, Renewal Term

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Amount of excess of issue price over par or stated value of stock and from other transaction involving stock or stockholder. Includes, but is not limited to, additional paid-in capital (APIC) for common and preferred stock.

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Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

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The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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The price per share of the conversion feature embedded in the debt instrument.

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Price of the entity's common stock which would be required to be attained for the conversion feature embedded in the debt instrument to become effective.

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Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

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Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

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Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Fair value of the amount outstanding under the credit facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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Debt and Other Commitments - Narrative (Details)				1 Months Ended	12 Months Ended
Debt and Other Commitments - Narrative (Details)	Mar. 23, 2021 USD ($)	Mar. 08, 2021 USD ($)	Sep. 20, 2020 USD ($)	Aug. 31, 2018 USD ($) day $ / shares	Jan. 02, 2022 USD ($) renewal	Jan. 03, 2021 USD ($)	Dec. 29, 2019 USD ($)	Aug. 21, 2018	Jun. 30, 2014 USD ($)
Debt Instrument [Line Items]
Additional paid in capital, net of tax					$ 8,938,000,000	$ 3,815,000,000
Bridge facility
Debt Instrument [Line Items]
Debt instrument term			364 days
Term Notes
Debt Instrument [Line Items]
Net proceeds from issuance, after deducting offering expenses payable	$ 992,000,000
Redemption price, percentage					100.00%
Interest expense recognized					$ 14,000,000
Term Notes \| Term Notes Due 2023
Debt Instrument [Line Items]
Principal amount	$ 500,000,000				500,000,000
Interest rate on convertible senior notes	0.55%
Term Notes \| Term Notes Due 2031
Debt Instrument [Line Items]
Principal amount	$ 500,000,000				$ 500,000,000
Interest rate on convertible senior notes	2.55%
Line of Credit \| The Credit Agreement
Debt Instrument [Line Items]
Debt instrument term, number of renewal \| renewal					2
Debt instrument, renewal term					1 year
Borrowings outstanding					$ 0
Line of Credit \| Revolving Credit Facility \| The Credit Agreement
Debt Instrument [Line Items]
Debt instrument term		5 years
Maximum borrowing capacity		$ 750,000,000
Line of Credit \| Swingline Borrowings \| The Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity		40,000,000
Line of Credit \| Letter of Credit \| The Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity		50,000,000
Unsecured Debt \| The Credit Agreement
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
Unsecured Debt \| Bridge facility
Debt Instrument [Line Items]
Principal amount			$ 1,000,000,000
Convertible Senior Notes
Debt Instrument [Line Items]
Interest expense recognized					$ 36,000,000	46,000,000	$ 51,000,000
Carrying value of equity component of convertible senior notes, net of debt issuance costs					126,000,000	213,000,000
Convertible Senior Notes \| 2023 Notes
Debt Instrument [Line Items]
Principal amount				$ 750,000,000	750,000,000	750,000,000
Interest rate on convertible senior notes								0.00%
Net proceeds from issuance, after deducting offering expenses payable				$ 735,000,000
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%
Observation period				20 days
Effective conversion rate divided period				20 days
Convertible stock price trigger (in dollars per share) \| $ / shares				$ 595.10
Effective interest rate used to measure fair value of convertible senior note				3.70%
Debt, fair value				$ 624,000,000
Additional paid in capital, before tax				126,000,000
Additional paid in capital, net of tax				$ 93,000,000
Convertible Senior Notes \| 2021 Notes
Debt Instrument [Line Items]
Principal amount					$ 0	$ 517,000,000			$ 517,000,000
Interest rate on convertible senior notes									0.50%
Effective interest rate used to measure fair value of convertible senior note									3.50%