Convertible Debt, Exercise Of Option To Purchase Additional Debt

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- Definition

Line of Credit Facility, Accordion Feature, Increase Limit

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Option Indexed To Issuer's Equity, Cap Price

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- Definition

Stock Issued, Repayments of Convertible Debt, Value

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The portion of the carrying value of long-term convertible debt as of the balance sheet date that is scheduled to be repaid within one year or in the normal operating cycle if longer. Convertible debt is a financial instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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

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- Definition

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

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- Definition

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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No definition available.

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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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- Definition

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

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- Definition

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

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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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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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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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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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Number of new stock issued during the period.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Debt - Narrative (Details) $ / shares in Units, shares in Millions	1 Months Ended		12 Months Ended
	Jan. 31, 2021 USD ($) $ / shares	Sep. 30, 2018 USD ($) day $ / shares	Jan. 31, 2021 USD ($) $ / shares shares	Jan. 31, 2020 USD ($)	Jan. 31, 2019 USD ($)
Debt Conversion [Line Items]
Proceeds from issuance of debt			$ 677,370,000	$ 0	$ 560,756,000
Repayments of convertible debt			384,199,000	0	0
Stock issued as repayment of convertible debt, value					524,979,000
Fair value of shares issued as part of the repayments of convertible senior notes			1,233,990,000	0	0
Loss on extinguishment of debt			(33,752,000)	0	$ 0
Convertible debt reclassified to convertible senior notes, current	$ 20,469,000		$ 20,469,000	0
Minimum
Debt Conversion [Line Items]
Commitment fee percentage			0.25%
Maximum
Debt Conversion [Line Items]
Commitment fee percentage			0.30%
Convertible Debt \| Convertible Senior Notes Due 2023
Debt Conversion [Line Items]
Repayments of convertible debt			$ 460,000,000.0
Debt conversion, converted instrument, amount	23,900,000		1,700,000,000
Cash payments to extinguish debt			$ 459,200,000
Stock issued as repayment of convertible debt (in shares) \| shares			4.7
Stock issued as repayment of convertible debt, value			$ 1,200,000,000
Loss on extinguishment of debt			(33,800,000)
Convertible Debt \| Reclassification from Noncurrent to Current \| Convertible Senior Notes Due 2023
Debt Conversion [Line Items]
Convertible debt reclassified to convertible senior notes, current	20,500,000		20,500,000
Convertible Debt \| Reclassification from Permanent Equity to Mezzanine Equity \| Convertible Senior Notes Due 2023
Debt Conversion [Line Items]
Convertible debt reclassified to mezzanine equity from permanent equity	3,400,000		3,400,000
Line of Credit \| Revolving Credit Facility
Debt Conversion [Line Items]
Maximum borrowing capacity	500,000,000.0		500,000,000.0
Accordion feature, increase limit	250,000,000.0		250,000,000.0
Convertible Senior Notes Due 2023 \| Convertible Debt
Debt Conversion [Line Items]
Aggregate principal amount of debt issued	575,000,000	$ 575,000,000.0	575,000,000	575,000,000
Debt interest rate percentage		0.50%
Additional principal amount purchased		$ 75,000,000.0
Proceeds from issuance of debt		$ 560,800,000
Conversion price (in usd per share) \| $ / shares		$ 71.50
Percentage of principal amount redeemable		100.00%
Trading days \| day		20
Consecutive trading days \| day		30
Percentage of conversion price		130.00%
Convertible debt reclassified to mezzanine equity from permanent equity	$ 99,398,000		$ 99,398,000	$ 131,331,000
Convertible Senior Notes Due 2024 \| Convertible Debt
Debt Conversion [Line Items]
Debt interest rate percentage	0.00%		0.00%
Additional principal amount purchased	$ 90,000,000.0		$ 90,000,000.0
Proceeds from issuance of debt	$ 677,300,000
Conversion price (in usd per share) \| $ / shares	$ 420.24		$ 420.24
Convertible debt reclassified to mezzanine equity from permanent equity	$ 63,268,000		$ 63,268,000
Capped Calls \| Convertible Senior Notes Due 2023
Debt Conversion [Line Items]
Initial cap price (in usd per share) \| $ / shares	$ 110.00		$ 110.00
Capped Calls \| Convertible Senior Notes Due 2024
Debt Conversion [Line Items]
Initial cap price (in usd per share) \| $ / shares	$ 525.30		$ 525.30
Conversion Covenant One \| Convertible Senior Notes Due 2023 \| Convertible Debt
Debt Conversion [Line Items]
Trading days \| day		20
Consecutive trading days \| day		30
Percentage of conversion price		130.00%
Conversion Covenant Two \| Convertible Senior Notes Due 2023 \| Convertible Debt
Debt Conversion [Line Items]
Trading days \| day		5
Consecutive trading days \| day		10
Percentage of conversion price		98.00%