Debt - Summary of Components of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2021	May 13, 2021	Apr. 02, 2021
Debt Instrument [Line Items]
Total principal amount	$ 3,855		$ 3,620
Less: unamortized discount and issuance costs	(12)		(19)
Total debt	3,843		3,601
Less: current portion	(1,086)		(313)
Total long-term debt	$ 2,757		3,288
Convertible Debt \| New 2.50% Convertible Senior Notes due April 1, 2022
Debt Instrument [Line Items]
Stated interest rate	2.50%	2.50%
Total principal amount	$ 0		250
Less: unamortized discount and issuance costs			0
Total debt			250
Effective Interest Rate	2.63%
Convertible Debt \| New 2.00% Convertible Unsecured Notes due August 15, 2022
Debt Instrument [Line Items]
Stated interest rate	2.00%
Total principal amount	$ 625		625
Less: unamortized discount and issuance costs	(3)		(5)
Total debt	$ 622		620
Effective Interest Rate	2.62%
Senior Notes \| 3.95% Senior Notes due June 15, 2022
Debt Instrument [Line Items]
Stated interest rate	3.95%
Total principal amount	$ 400		400
Effective Interest Rate	4.05%
Senior Notes \| 5.00% Senior Notes due April 15, 2025
Debt Instrument [Line Items]
Stated interest rate	5.00%
Total principal amount	$ 1,100		1,100
Effective Interest Rate	5.00%
Term loan \| Initial Term Loan due May 7, 2026
Debt Instrument [Line Items]
Total principal amount	$ 1,010		$ 494
Weighted average interest rate	1.50%		1.50%
Term loan \| Delayed Term loan due May 7, 2026
Debt Instrument [Line Items]
Total principal amount	$ 713		$ 741
Weighted average interest rate	1.50%		1.50%
Mortgages \| 0.95% Avira Mortgage due December 30, 2030
Debt Instrument [Line Items]
Stated interest rate	0.95%
Total principal amount	$ 3		$ 5
Effective Interest Rate	0.95%
Mortgages \| 1.29% Avira Mortgage due December 30, 2029
Debt Instrument [Line Items]
Stated interest rate	1.29%
Total principal amount	$ 4		$ 5
Effective Interest Rate	1.29%

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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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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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Weighted average interest rate of long-term debt outstanding calculated at point in time.

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