Amount of accumulated debt issuance costs.

No definition available.

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- Definition

Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870

+ Details

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Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of debt redemption features under terms of the debt agreement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph e

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Start date of debt instrument redemption period, in CCYY-MM-DD format.

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

+ Details

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Balance Type:	debit
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- Details

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Period Type:

Long-term Debt (Narrative) (Details) (USD $)	12 Months Ended
Long-term Debt (Narrative) (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 05, 2013	Aug. 06, 2014
Long-term debt [Line Items]
Value of Notes in long-term debt	$ 1,635,000,000us-gaap_ConvertibleLongTermNotesPayable	$ 600,000,000us-gaap_ConvertibleLongTermNotesPayable
Net proceeds received from issuance of the Notes	1,016,370,000us-gaap_ProceedsFromConvertibleDebt	587,850,000us-gaap_ProceedsFromConvertibleDebt	0us-gaap_ProceedsFromConvertibleDebt
Unsecured Senior Notes [Member]
Long-term debt [Line Items]
Value of Notes in long-term debt	1,635,000,000
Accumulated debt issuance costs	30,780,000
Net proceeds received from issuance of the Notes	1,016,370,000	587,850,000
Unsecured Senior Notes [Member] \| Non-contingent redemption option at the option of the holder [Member]
Long-term debt [Line Items]
Redemption price, percentage of principal amount redeemed	100.00%
Unsecured Senior Notes [Member] \| Contingent redemption option at the option of the holder [Member]
Long-term debt [Line Items]
Redemption price, percentage of principal amount redeemed	100.00%
Unsecured Senior Notes [Member] \| Redemption option at the option of the Company [Member]
Long-term debt [Line Items]
Redemption price, percentage of principal amount redeemed	100.00%
Redemption, description	On or after September 15, 2016, August 15, 2017 and August 15, 2019, the Company may redeem any or all of the 2018 Notes, 2020 Notes, and 2021 Notes, respectively, in cash at the redemption price, provided that the last reported sale price of the Company's ADSs for 20 or more trading days in a period of 30 consecutive trading days ending within 10 trading days immediately prior to the date of the redemption notice exceeds 130% of the applicable conversion price in effect on each such trading day.
Unsecured Senior Notes [Member] \| 2018 Notes [Member]
Long-term debt [Line Items]
Unsecured Senior Notes, principal amount				600,000,000
Interest rate	2.50%
Unsecured Senior Notes [Member] \| 2018 Notes [Member] \| ADS [Member]
Long-term debt [Line Items]
Initial conversion price	$ 110.96
Unsecured Senior Notes [Member] \| 2018 Notes [Member] \| Non-contingent redemption option at the option of the holder [Member]
Long-term debt [Line Items]
Redemption period, start date	Sep. 15, 2016
Unsecured Senior Notes [Member] \| 2018 Notes [Member] \| Contingent redemption option at the option of the holder [Member]
Long-term debt [Line Items]
Redemption period, start date	Sep. 05, 2013
Unsecured Senior Notes [Member] \| 2018 Notes [Member] \| Redemption option at the option of the Company [Member]
Long-term debt [Line Items]
Redemption period, start date	Sep. 15, 2016
Unsecured Senior Notes [Member] \| 2020 Notes [Member]
Long-term debt [Line Items]
Unsecured Senior Notes, principal amount					517,500,000
Interest rate	0.50%
Unsecured Senior Notes [Member] \| 2020 Notes [Member] \| ADS [Member]
Long-term debt [Line Items]
Initial conversion price	$ 125.33
Unsecured Senior Notes [Member] \| 2020 Notes [Member] \| Non-contingent redemption option at the option of the holder [Member]
Long-term debt [Line Items]
Redemption period, start date	Aug. 15, 2017
Unsecured Senior Notes [Member] \| 2020 Notes [Member] \| Contingent redemption option at the option of the holder [Member]
Long-term debt [Line Items]
Redemption period, start date	Aug. 06, 2014
Unsecured Senior Notes [Member] \| 2020 Notes [Member] \| Redemption option at the option of the Company [Member]
Long-term debt [Line Items]
Redemption period, start date	Aug. 15, 2017
Unsecured Senior Notes [Member] \| 2021 Notes [Member]
Long-term debt [Line Items]
Unsecured Senior Notes, principal amount					$ 517,500,000
Interest rate	1.75%
Unsecured Senior Notes [Member] \| 2021 Notes [Member] \| ADS [Member]
Long-term debt [Line Items]
Initial conversion price	$ 120.77
Unsecured Senior Notes [Member] \| 2021 Notes [Member] \| Non-contingent redemption option at the option of the holder [Member]
Long-term debt [Line Items]
Redemption period, start date	Aug. 15, 2019
Unsecured Senior Notes [Member] \| 2021 Notes [Member] \| Contingent redemption option at the option of the holder [Member]
Long-term debt [Line Items]
Redemption period, start date	Aug. 06, 2014
Unsecured Senior Notes [Member] \| 2021 Notes [Member] \| Redemption option at the option of the Company [Member]
Long-term debt [Line Items]
Redemption period, start date	Aug. 15, 2019