Conversion price per share.

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- Definition

Debt instrument convertible conversion price percentage.

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No definition available.

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- Definition

Year in which convertible notes may be converted with no other conversion criteria having been met.

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No definition available.

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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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The cost of the convertible note hedge transactions.

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- Definition

Percentage of average closing price of our common stock over five consecutive trading days that if Notes trade below they would become convertible.

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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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- Definition

Purchase price per common stock.

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No definition available.

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- Definition

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

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-Topic 235
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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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- 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

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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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 instruments must exceed threshold percentage for a specified number of trading days to trigger conversion feature, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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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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No definition available.

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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.

+ References

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

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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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Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

+ References

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- Definition

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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

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

+ References

No definition available.

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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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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Convertible and Long-term Debt Obligations - 0.25% and 1.25% Convertible Senior Notes due in 2019 and 2021 and Bond Hedge and Warrant Transactions - Additional Information (Detail)	1 Months Ended		3 Months Ended	12 Months Ended
	Apr. 30, 2014 USD ($) $ / shares shares	Mar. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares	Dec. 31, 2016 USD ($) d $ / shares shares	Dec. 31, 2014 USD ($)	Dec. 31, 2015 USD ($)
Debt Instrument [Line Items]
Unpaid Principal Balance			$ 7,511,760	$ 7,511,760
Carrying Value			5,892,016	5,892,016
Debt conversion, converted instrument, amount			8,784,000	8,784,000		$ 47,285,000
Proceeds from issuance of warrants					$ 389,160,000
0.25% Convertible senior notes due 2019 [Member]
Debt Instrument [Line Items]
Debt conversion, converted instrument, amount			$ 188,100,000	$ 188,100,000
Debt instrument, effective interest rate			4.89%	4.89%
1.25% Convertible senior notes in due 2021 [Member]
Debt Instrument [Line Items]
Unpaid Principal Balance						1,080,000,000
Carrying Value						1,380,000,000
Debt conversion, converted instrument, amount			$ 369,400,000	$ 369,400,000
Debt instrument, effective interest rate			5.96%	5.96%
0.25% and 1.25% Convertible Senior Notes and Bond Hedge and Warrant Transactions [Member]
Debt Instrument [Line Items]
Convertible principal amount				$ 1,000
Convertible instrument, shares issued \| shares				2.7788
Convertible notes, conversion price \| $ / shares			$ 359.87	$ 359.87
Debt instrument convertible, percentage of conversion price			130.00%	130.00%
Average percentage of closing sale price of common stock				98.00%
Percentage of repurchase price is equal to principal amount of convertible notes				100.00%
Common stock price to conversion price, percentage			130.00%
0.25% and 1.25% Convertible Senior Notes and Bond Hedge and Warrant Transactions [Member] \| One Hundred Thirty Percent Applicable Conversion Price [Member]
Debt Instrument [Line Items]
Debt instrument convertible consecutive trading days \| d				20
Debt instrument convertible trading days				30 days
0.25% and 1.25% Convertible Senior Notes and Bond Hedge and Warrant Transactions [Member] \| Ninety Eight Percent Applicable Conversion Price
Debt Instrument [Line Items]
Debt instrument convertible consecutive trading days \| d				5
Debt instrument convertible trading days				5 days
0.25% Convertible Senior Notes due in 2019 [Member]
Debt Instrument [Line Items]
Unpaid Principal Balance						788,000,000
Carrying Value						$ 920,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Percentage of repurchase price is equal to principal amount of convertible notes				100.00%
Debt instrument, effective interest rate			4.29%	4.29%
Payment for purchase of common stock \| shares		5,600,000
Common stock purchase price \| $ / shares		$ 359.87
Hedge transactions		$ 524,700,000
Senior Notes [Member] \| Warrants [Member]
Debt Instrument [Line Items]
Hedge transactions	$ 78,700,000
Proceeds from issuance of warrants	50,800,000
Senior Notes [Member] \| 0.25% Convertible senior notes due 2019 [Member]
Debt Instrument [Line Items]
Principal amount of convertible senior notes	$ 120,000,000	$ 800,000,000
Interest Rate		0.25%
Proceeds from convertible senior notes, net of underwriting discounts and offering costs				$ 905,800,000
Debt issuance costs			$ 14,200,000	$ 14,200,000
Debt instrument maturity year				2019
Shares issued under warrants \| shares	300,000	2,200,000
Exercise price of warrant \| $ / shares	$ 512.66	$ 512.66
Senior Notes [Member] \| 0.25% Convertible senior notes due 2019 [Member] \| Minimum [Member] \| Warrants [Member]
Debt Instrument [Line Items]
Conversion price per share \| $ / shares	359.87
Senior Notes [Member] \| 0.25% Convertible senior notes due 2019 [Member] \| Maximum [Member] \| Warrants [Member]
Debt Instrument [Line Items]
Conversion price per share \| $ / shares	$ 512.66
Senior Notes [Member] \| 1.25% Convertible senior notes in due 2021 [Member]
Debt Instrument [Line Items]
Principal amount of convertible senior notes	$ 180,000,000	$ 1,200,000,000
Interest Rate		1.25%
Proceeds from convertible senior notes, net of underwriting discounts and offering costs				$ 1,360,000,000
Debt issuance costs			$ 21,400,000	$ 21,400,000
Debt instrument maturity year				2021
Shares issued under warrants \| shares	500,000	3,300,000
Exercise price of warrant \| $ / shares	$ 560.64	$ 560.64
Proceeds from issuance of warrants		$ 338,400,000
Senior Notes [Member] \| 1.25% Convertible senior notes in due 2021 [Member] \| Minimum [Member] \| Warrants [Member]
Debt Instrument [Line Items]
Conversion price per share \| $ / shares	359.87
Senior Notes [Member] \| 1.25% Convertible senior notes in due 2021 [Member] \| Maximum [Member] \| Warrants [Member]
Debt Instrument [Line Items]
Conversion price per share \| $ / shares	$ 560.64
Senior Notes [Member] \| Zero Point Two Five and One Point Two Five Percent Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument interest rate and payment description				The interest rates are fixed at 0.25% and 1.25% per annum and are payable semi-annually in arrears on March 1 and September 1 of each year, commencing on September 1, 2014.