Adjustments to additional paid in capital increase (decrease) in stock split.

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Conversion price per share.

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No definition available.

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- Definition

Debt conversion converted for cash.

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No definition available.

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Debt instrument convertible conversion price percentage.

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No definition available.

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- Definition

Long term debt and finance leases current.

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Long term debt and finance leases, noncurrent

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- Definition

The number of shares we purchase under note hedge transactions entered.

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No definition available.

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- Definition

The cost of the convertible note hedge transactions.

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- Definition

Number of common shares received.

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No definition available.

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- Definition

Percentage of principal amount of convertible notes is equal to repurchase price.

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No definition available.

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- Definition

Purchase price per common stock.

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No definition available.

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- Definition

Reclassifications of temporary equity to equity component of debt instrument.

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No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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- Definition

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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-Topic 230
-SubTopic 10
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- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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- Definition

The amount of the original debt being converted 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.

+ References

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- Definition

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

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-Topic 470
-SubTopic 20
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- Definition

The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

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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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No definition available.

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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

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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.

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No definition available.

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- Definition

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

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-Publisher FASB
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-Paragraph 3
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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 14
-Subparagraph (b)
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- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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Debt - 2022 Notes, Bond Hedges and Warrant Transactions - Additional Information (Detail)	1 Months Ended		3 Months Ended	12 Months Ended
	Mar. 31, 2017 USD ($) d $ / shares shares	Mar. 31, 2014 USD ($)	Dec. 31, 2020 USD ($) d shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Hedge transactions		$ 398,000,000
Proceeds from issuance of warrants		$ 257,000,000			$ 174,000,000
Debt and finance leases, net of current portion			$ 9,556,000,000	$ 9,556,000,000	11,634,000,000
Current portion of debt and finance leases			$ 2,132,000,000	2,132,000,000	$ 1,785,000,000
Minimum [Member]
Debt Instrument [Line Items]
Debt instrument convertible, percentage of conversion price			130.00%
One Hundred Thirty Percent Applicable Conversion Price [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument convertible consecutive trading days \| d			20
One Hundred Thirty Percent Applicable Conversion Price [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument convertible trading days \| d			30
2.375% Convertible Senior Notes due in 2022 [Member]
Debt Instrument [Line Items]
Principal amount of convertible senior notes	$ 978,000,000
Proceeds from convertible senior notes, net of underwriting discounts and issuance costs	966,000,000
Convertible principal amount	$ 1,000			$ 474,000,000
Shares issued upon conversion of each $1000 principal amount \| shares	15.2670			6,200,000
Convertible notes, conversion price \| $ / shares	$ 65.50
Debt instrument convertible, percentage of conversion price	130.00%
Product percentage of closing sale price of common stock	98.00%
Percentage of repurchase price is equal to principal amount of convertible notes	100.00%
Debt conversion, converted instrument, amount				$ 146,000,000
Debt instrument, effective interest rate	6.00%
Payment for purchase of common stock \| shares	14,900,000
Common stock purchase price \| $ / shares	$ 65.50
Hedge transactions	$ 204,000,000
Shares issued under warrants \| shares	14,900,000
Exercise price of warrant \| $ / shares	$ 131.00
Proceeds from issuance of warrants	$ 53,000,000
Debt conversion converted for cash				474,000,000
Increase (decrease) to additional paid in capital, stock split				$ (5,000,000)
Number of common shares received \| shares			6,200,000	6,200,000
Debt instrument convertible, if-converted value in excess of principal				$ 4,920,000,000
2.375% Convertible Senior Notes due in 2022 [Member] \| Recourse debt [Member]
Debt Instrument [Line Items]
Debt and finance leases, net of current portion			$ (115,000,000)	(115,000,000)
Current portion of debt and finance leases			$ 115,000,000	115,000,000
Difference between the aggregate principal and carrying value as mezzanine equity				$ 5,000,000
2.375% Convertible Senior Notes due in 2022 [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Conversion price per share \| $ / shares	$ 65.50
2.375% Convertible Senior Notes due in 2022 [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Conversion price per share \| $ / shares	$ 131.00
2.375% Convertible Senior Notes due in 2022 [Member] \| One Hundred Thirty Percent Applicable Conversion Price [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument convertible consecutive trading days \| d	20
2.375% Convertible Senior Notes due in 2022 [Member] \| One Hundred Thirty Percent Applicable Conversion Price [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument convertible trading days \| d	30
2.375% Convertible Senior Notes due in 2022 [Member] \| Ninety Eight Percent Applicable Conversion Price
Debt Instrument [Line Items]
Debt instrument convertible consecutive trading days \| d	5