v3.6.0.2

Debt CCFC Term Loans (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Mar. 31, 2014
Debt Instrument [Line Items]
Long-term Debt		$ 12,046	$ 11,292
Incremental CCFC Term Loans [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 425
Long Term Debt net of Original Issuance Disount		98.75%
Secured Debt [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 1,553	$ 1,565
Debt Instrument, Interest Rate, Effective Percentage	[1]	3.50%	3.50%
Long Term Debt net of Original Issuance Disount		99.75%
Percentage of principal amount of Term Loan to be paid quarterly		0.25%
CCFC Term Loan B-1 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 900
Term Loan Period		7 years
CCFC Term Loan B-2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 300
Term Loan Period		8 years 6 months
Federal Funds Effective Rate [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.50%
Prime Rate Or The Eurodollar Rate For a One Month Interest Period [Member] | CCFC Term Loan B-1 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.25%
Prime Rate Or The Eurodollar Rate For a One Month Interest Period [Member] | CCFC Term Loan B-2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.50%
London Interbank Offered Rate (LIBOR) [Member] | CCFC Term Loan B-1 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		2.25%
London Interbank Offered Rate (LIBOR) [Member] | CCFC Term Loan B-2 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		2.50%
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		0.75%
[1] Our weighted average interest rate calculation includes the amortization of debt issuance costs and debt discount.

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- Definition

Long Term Debt net of Original Issuance Disount

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- Definition

Percentage of the principal amount of the Term Loan to be paid quarterly

+ References

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- Definition

Term Loan Period

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- Definition

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

+ References

No definition available.

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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 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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-Section 45
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-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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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

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(a)(1))
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Contractual interest rate for funds borrowed, under the debt agreement.

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-Name Accounting Standards Codification
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-Section S99
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
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