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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031898-161870

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Period Type:	instant

- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 505
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(5))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

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.

+ References

No definition available.

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- Definition

The maximum number of shares that could be issued to net share settle a contract, if applicable. If a contract does not have a fixed or determinable maximum number of shares that may be required to be issued, disclose the fact that a potentially infinite number of shares could be issued to settle the contract.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 40
-Section 50
-Paragraph 5
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-URI http://asc.fasb.org/extlink&oid=120519210&loc=d3e90205-114008

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Debt - Details of Notes (Details) shares in Millions		1 Months Ended
Debt - Details of Notes (Details) shares in Millions	May 01, 2020 shares	Aug. 31, 2018 $ / shares shares
2023 Notes [Member] \| Call Option [Member]
Debt Instrument [Line Items]
Option indexed to issuer's equity (in shares)		5.5
2023 Notes [Member] \| Convertible Debt [Member]
Debt Instrument [Line Items]
Conversion ratio (in shares per $1000)		0.024046
Conversion price (in dollars per share) \| $ / shares		$ 41.59
2023 Notes [Member] \| Convertible Debt [Member] \| Call Option [Member]
Debt Instrument [Line Items]
Option indexed to issuer's equity (in shares)		5.5
2025 Notes [Member] \| Call Option [Member]
Debt Instrument [Line Items]
Option indexed to issuer's equity (in shares)	3.8
2025 Notes [Member] \| Convertible Debt [Member]
Debt Instrument [Line Items]
Conversion ratio (in shares per $1000)	0.0163875
Conversion price (in dollars per share) \| $ / shares		$ 61.02
2025 Notes [Member] \| Convertible Debt [Member] \| Call Option [Member]
Debt Instrument [Line Items]
Option indexed to issuer's equity (in shares)		3.8