Debt Instrument, Quarterly Payment, Percentage of Total Borrowings

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Deferred Tax Assets, Long-Term Debt

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Royalty Agreement, Closing Day Payment

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Royalty Agreement, Maximum Potential Royalty Payments

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Royalty Agreement, Maximum Potential Royalty Payments As A Percentage Of Funding Received

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Royalty Agreement, Milestone Payment Based On Regulatory Approval

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Royalty Agreement, Remaining Royalty Payments To Be Paid

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Royalty Agreement, Tiered Royalty, Percent

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- Definition

Amount of amortization expense attributable to debt issuance costs.

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

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- Definition

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

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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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No definition available.

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Amount of the required periodic payments including both interest and principal payments.

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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

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

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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- Definition

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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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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The cash outflow for loan and debt issuance costs.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Debt (Details) - USD ($)		1 Months Ended	3 Months Ended		12 Months Ended
Debt (Details) - USD ($)	Jul. 02, 2020	Feb. 28, 2017	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2018	Dec. 31, 2020	Jun. 07, 2018	May 31, 2018
Debt Instrument [Line Items]
Amortization of deferred financing costs				$ 1,200,000
Remaining unamortized deferred financing costs				9,900,000		$ 11,100,000
Current portion of long-term debt				143,200,000		142,400,000
Long-term debt, less current portion				2,388,800,000		2,419,600,000
Portola Pharmaceuticals, Inc.
Debt Instrument [Line Items]
Deferred tax assets, royalty debt	$ 42,400
Repayments of debt	196,900,000
Credit Agreement
Debt Instrument [Line Items]
Payments of financing costs					$ 53,100,000
Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity							$ 1,000,000,000.0
Letters of credit, amount outstanding				1,000,000.0
Credit Agreement \| Senior Secured Term Loan \| Line of Credit
Debt Instrument [Line Items]
Debt instrument, principal amount							$ 2,612,500,000
Debt Instrument, quarterly payment as a percent of total borrowings							5.00%
Debt Instrument, Periodic Payment				(32,600,000)
Outstanding debt				2,351,300,000
Royalty-Based Financing Agreement \| HealthCare Royalty Partners
Debt Instrument [Line Items]
Outstanding debt				$ 188,700,000		187,000,000.0
Debt Instrument, Interest Rate, Effective Percentage				11.40%
Interest Expense, Debt				$ 5,000,000.0
Repayments of debt				3,300,000
Current portion of long-term debt				16,300,000		15,500,000
Long-term debt, less current portion				$ 172,400,000		171,500,000
Royalty-Based Financing Agreement \| HealthCare Royalty Partners \| Portola Pharmaceuticals, Inc.
Debt Instrument [Line Items]
Outstanding debt	182,000,000.0
Total repayment obligation as of December 31, 2020	276,900,000					$ 271,900,000
Debt Instrument, Unamortized Discount	94,900,000
Royalty-Based Financing Agreement \| HealthCare Royalty Partners \| Portola Pharmaceuticals, Inc.
Debt Instrument [Line Items]
Royalty Agreement, Closing Day Payment		$ 50,000,000.0
Royalty Agreement, Milestone Payment Based On Regulatory Approval								$ 100,000,000.0
Royalty Agreement, Maximum Potential Royalty Payments As A Percentage Of Funding Received		195.00%
Royalty Agreement, Maximum Potential Royalty Payments		$ 290,600,000
Repayments of debt	$ 13,700,000
Royalty-Based Financing Agreement \| HealthCare Royalty Partners \| Portola Pharmaceuticals, Inc. \| Minimum
Debt Instrument [Line Items]
Royalty Agreement, Tiered Royalty, Percent		4.20%
Royalty-Based Financing Agreement \| HealthCare Royalty Partners \| Portola Pharmaceuticals, Inc. \| Maximum
Debt Instrument [Line Items]
Royalty Agreement, Tiered Royalty, Percent		8.50%
Royalty-Based Financing Agreement \| Forecast [Member] \| HealthCare Royalty Partners
Debt Instrument [Line Items]
Repayments of debt			$ 2,500,000