Aggregate Amount of Cross Default Debt Constituting Event of Default.

No definition available.

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

- Definition

Amortization rate of initial principal amount per annum payable quarterly.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- 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

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-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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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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(a)(1))

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

+ Details

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- Details

Name:	us-gaap_DebtInstrumentLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: 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(a)(2))

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

+ Details

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Period Type:	duration

- Definition

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

+ 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

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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

- Definition

Date the debt instrument was repurchased, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

For an unclassified balance sheet, the amount as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. Such amount is before the consideration of accumulated amortization.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

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Debt (Senior Notes and Senior Credit Facilities Narrative) (Details)	3 Months Ended		9 Months Ended		1 Months Ended	9 Months Ended	12 Months Ended		1 Months Ended	9 Months Ended	12 Months Ended	1 Months Ended	9 Months Ended	12 Months Ended	1 Months Ended	9 Months Ended	12 Months Ended	1 Months Ended	9 Months Ended	12 Months Ended	0 Months Ended		9 Months Ended	0 Months Ended	1 Months Ended	9 Months Ended		12 Months Ended	0 Months Ended		0 Months Ended
	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2014 Senior Unsecured Notes Due 2019 [Member] USD ($)	Sep. 30, 2014 Senior Unsecured Notes Due 2019 [Member] USD ($)	Dec. 31, 2013 Senior Unsecured Notes Due 2019 [Member]	Sep. 24, 2014 Senior Unsecured Notes Due 2019 [Member] EUR (€)	Nov. 30, 2012 Senior Unsecured Notes Due 2022 [Member] USD ($)	Sep. 30, 2014 Senior Unsecured Notes Due 2022 [Member]	Dec. 31, 2013 Senior Unsecured Notes Due 2022 [Member]	May 31, 2011 Senior Unsecured Notes Due 2021 [Member] USD ($)	Sep. 30, 2014 Senior Unsecured Notes Due 2021 [Member]	Dec. 31, 2013 Senior Unsecured Notes Due 2021 [Member]	Sep. 30, 2010 Senior Unsecured Notes Due 2018 [Member] USD ($)	Sep. 30, 2014 Senior Unsecured Notes Due 2018 [Member]	Dec. 31, 2013 Senior Unsecured Notes Due 2018 [Member]	Sep. 30, 2014 Term C-3 Loan Facility [Member] USD ($)	Sep. 30, 2014 Term C-3 Loan Facility [Member] USD ($)	Dec. 31, 2013 Term C-3 Loan Facility [Member] USD ($)	Sep. 30, 2014 Term C-3 Loan Facility [Member] London Interbank Offered Rate (LIBOR) [Member]	Sep. 30, 2014 Term C-3 Loan Facility [Member] European Interbank Offered Rate (EURIBOR) [Member]	Sep. 30, 2014 Revolving Credit Facility [Member] USD ($)	Sep. 30, 2014 Revolving Credit Facility [Member] London Interbank Offered Rate (LIBOR) [Member]	Sep. 30, 2013 Term C-2 Loan Facility [Member]	Sep. 30, 2014 Term C-2 Loan Facility [Member] USD ($)	Sep. 30, 2014 Term C-2 Loan Facility [Member] EUR (€)	Dec. 31, 2013 Term C-2 Loan Facility [Member] USD ($)	Sep. 30, 2014 Term C-2 Loan Facility [Member] European Interbank Offered Rate (EURIBOR) [Member]	Sep. 30, 2014 Amended Credit Agreement [Member] USD ($)	Oct. 15, 2014 Subsequent Event [Member] Senior Unsecured Notes Due 2018 [Member] USD ($)	Oct. 15, 2014 Subsequent Event [Member] Senior Unsecured Notes Due 2018 [Member] USD ($)
Debt Instrument [Line Items]
Senior notes								€ 300,000,000	$ 500,000,000			$ 400,000,000			$ 600,000,000
Interest rate, stated percentage					3.25%	3.25%	3.25%		4.625%	4.625%	4.625%	5.875%	5.875%	5.875%	6.625%	6.625%	6.625%
Debt Instrument, Repurchase Date																															Oct. 15, 2014
Secured Debt																		914,000,000	914,000,000	0						35,000,000	28,000,000	978,000,000
Debt Instrument, Redemption Price, Percentage					100.00%
Refinancing expense	4,000,000	1,000,000	4,000,000	1,000,000																											5,000,000
Deferred Finance Costs, Gross					6,000,000	6,000,000												4,000,000	4,000,000
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed																															103.313%
Debt Instrument, Repurchase Amount																																620,000,000
Interest paid for called senior notes																															20,000,000
Date of maturity					Oct. 15, 2019	Oct. 15, 2019	Oct. 15, 2019		Nov. 15, 2022	Nov. 15, 2022	Nov. 15, 2022	Jun. 15, 2021	Jun. 15, 2021	Jun. 15, 2021	Oct. 15, 2018	Oct. 15, 2018	Oct. 15, 2018
Maximum borrowing capacity																							900,000,000
Cross default covenant to other debt																														$ 50,000,000
Credit facility, expiration date																		Oct. 15, 2018	Oct. 15, 2018	Oct. 15, 2018					Oct. 15, 2016	Oct. 15, 2016	Oct. 15, 2016	Oct. 15, 2016
Estimated margin																					2.25%	2.25%		1.50%					2.00%
Amortization rate of initial principal amount per annum payable quarterly																							1.00%
Line of credit facility, unused capacity, commitment fee percentage																							0.25%