XML 93 R77.htm IDEA: XBRL DOCUMENT v3.22.4

Pension and Other Postretirement Benefits (Details 4) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pooled Property Funds
Pension and Other Postretirement Benefits
Defined Benefit Plan, Plan Assets, Fair Value by Hierarchy and NAV [Extensible List]		Fair Value Measured at Net Asset Value Per Share [Member]
Funds measured at NAV
Pension and Other Postretirement Benefits
Defined Benefit Plan, Plan Assets, Fair Value by Hierarchy and NAV [Extensible List]	Fair Value Measured at Net Asset Value Per Share [Member]
United Kingdom | Pension Plans
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 320	$ 505	$ 491
Total assets at fair value	316
Receivable from redemption	4
United Kingdom | Pension Plans | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	41
United Kingdom | Pension Plans | Defined Benefit Plan, Cash [Member]
Pension and Other Postretirement Benefits
Fair value of plan assets		15
United Kingdom | Pension Plans | Pooled Target Return Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		122
United Kingdom | Pension Plans | Fixed income: Pooled UK government index-linked securities
Pension and Other Postretirement Benefits
Fair value of plan assets		78
United Kingdom | Pension Plans | Fixed income: Pooled fixed income funds
Pension and Other Postretirement Benefits
Fair value of plan assets		88
United Kingdom | Pension Plans | Liability-driven investment funds
Pension and Other Postretirement Benefits
Fair value of plan assets	30	67
United Kingdom | Pension Plans | Pooled UK Government Securities Funds Index-Linked Securities
Pension and Other Postretirement Benefits
Fair value of plan assets	67
United Kingdom | Pension Plans | Pooled Global Debt Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	47
United Kingdom | Pension Plans | Pooled Diversified Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	44	52
United Kingdom | Pension Plans | Cash and Cash Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	26
United Kingdom | Pension Plans | Pooled Property Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		83
United Kingdom | Pension Plans | Funds measured at NAV
Pension and Other Postretirement Benefits
Fair value of plan assets	61
United Kingdom | Pension Plans | Fair Value, Inputs, Level 1, 2 and 3
Pension and Other Postretirement Benefits
Fair value of plan assets	255	422
United Kingdom | Pension Plans | Quoted Prices in Active Markets (Level 1)
Pension and Other Postretirement Benefits
Fair value of plan assets	9	8
United Kingdom | Pension Plans | Quoted Prices in Active Markets (Level 1) | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0
United Kingdom | Pension Plans | Quoted Prices in Active Markets (Level 1) | Defined Benefit Plan, Cash [Member]
Pension and Other Postretirement Benefits
Fair value of plan assets		8
United Kingdom | Pension Plans | Quoted Prices in Active Markets (Level 1) | Pooled Target Return Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Pension Plans | Quoted Prices in Active Markets (Level 1) | Fixed income: Pooled UK government index-linked securities
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Pension Plans | Quoted Prices in Active Markets (Level 1) | Fixed income: Pooled fixed income funds
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Pension Plans | Quoted Prices in Active Markets (Level 1) | Liability-driven investment funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
United Kingdom | Pension Plans | Quoted Prices in Active Markets (Level 1) | Pooled UK Government Securities Funds Index-Linked Securities
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Pension Plans | Quoted Prices in Active Markets (Level 1) | Pooled Global Debt Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0
United Kingdom | Pension Plans | Quoted Prices in Active Markets (Level 1) | Pooled Diversified Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
United Kingdom | Pension Plans | Quoted Prices in Active Markets (Level 1) | Cash and Cash Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	9
United Kingdom | Pension Plans | Significant Other Observable Inputs (Level 2)
Pension and Other Postretirement Benefits
Fair value of plan assets	246	414
United Kingdom | Pension Plans | Significant Other Observable Inputs (Level 2) | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	41
United Kingdom | Pension Plans | Significant Other Observable Inputs (Level 2) | Defined Benefit Plan, Cash [Member]
Pension and Other Postretirement Benefits
Fair value of plan assets		7
United Kingdom | Pension Plans | Significant Other Observable Inputs (Level 2) | Pooled Target Return Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		122
United Kingdom | Pension Plans | Significant Other Observable Inputs (Level 2) | Fixed income: Pooled UK government index-linked securities
Pension and Other Postretirement Benefits
Fair value of plan assets		78
United Kingdom | Pension Plans | Significant Other Observable Inputs (Level 2) | Fixed income: Pooled fixed income funds
Pension and Other Postretirement Benefits
Fair value of plan assets		88
United Kingdom | Pension Plans | Significant Other Observable Inputs (Level 2) | Liability-driven investment funds
Pension and Other Postretirement Benefits
Fair value of plan assets	30	67
United Kingdom | Pension Plans | Significant Other Observable Inputs (Level 2) | Pooled UK Government Securities Funds Index-Linked Securities
Pension and Other Postretirement Benefits
Fair value of plan assets	67
United Kingdom | Pension Plans | Significant Other Observable Inputs (Level 2) | Pooled Global Debt Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	47
United Kingdom | Pension Plans | Significant Other Observable Inputs (Level 2) | Pooled Diversified Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	44	52
United Kingdom | Pension Plans | Significant Other Observable Inputs (Level 2) | Cash and Cash Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	17
United Kingdom | Pension Plans | Significant Unobservable Inputs (Level 3)
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
United Kingdom | Pension Plans | Significant Unobservable Inputs (Level 3) | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0
United Kingdom | Pension Plans | Significant Unobservable Inputs (Level 3) | Defined Benefit Plan, Cash [Member]
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Pension Plans | Significant Unobservable Inputs (Level 3) | Pooled Target Return Funds
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Pension Plans | Significant Unobservable Inputs (Level 3) | Fixed income: Pooled UK government index-linked securities
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Pension Plans | Significant Unobservable Inputs (Level 3) | Fixed income: Pooled fixed income funds
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Pension Plans | Significant Unobservable Inputs (Level 3) | Liability-driven investment funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
United Kingdom | Pension Plans | Significant Unobservable Inputs (Level 3) | Pooled UK Government Securities Funds Index-Linked Securities
Pension and Other Postretirement Benefits
Fair value of plan assets		0
United Kingdom | Pension Plans | Significant Unobservable Inputs (Level 3) | Pooled Global Debt Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0
United Kingdom | Pension Plans | Significant Unobservable Inputs (Level 3) | Pooled Diversified Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
United Kingdom | Pension Plans | Significant Unobservable Inputs (Level 3) | Cash and Cash Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0
North America | Pension Plans
Pension and Other Postretirement Benefits
Fair value of plan assets	273	830	$ 846
North America | Pension Plans | Cash and cash equivalents
Pension and Other Postretirement Benefits
Fair value of plan assets	3	14
North America | Pension Plans | Equity mutual funds: Index equity
Pension and Other Postretirement Benefits
Fair value of plan assets	28	157
North America | Pension Plans | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	16	34
North America | Pension Plans | Fixed income: Other
Pension and Other Postretirement Benefits
Fair value of plan assets	6	7
North America | Pension Plans | Fixed income: Government and agency securities
Pension and Other Postretirement Benefits
Fair value of plan assets	81	103
North America | Pension Plans | Fixed income: Corporate bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	109	460
North America | Pension Plans | Fixed income: U.S.Treasury bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	14	61
North America | Pension Plans | Fixed income mutual funds
Pension and Other Postretirement Benefits
Fair value of plan assets	16
North America | Pension Plans | Accruals and payables—net
Pension and Other Postretirement Benefits
Fair value of plan assets	0
North America | Pension Plans | Accruals and payables—net
Pension and Other Postretirement Benefits
Fair value of plan assets		(6)
North America | Pension Plans | Fair Value, Inputs, Level 1, 2 and 3 | Defined Benefit Plan, Assets Before Receivables, Net
Pension and Other Postretirement Benefits
Fair value of plan assets	273	836
North America | Pension Plans | Quoted Prices in Active Markets (Level 1) | Defined Benefit Plan, Assets Before Receivables, Net
Pension and Other Postretirement Benefits
Fair value of plan assets	44	228
North America | Pension Plans | Quoted Prices in Active Markets (Level 1) | Cash and cash equivalents
Pension and Other Postretirement Benefits
Fair value of plan assets	2	10
North America | Pension Plans | Quoted Prices in Active Markets (Level 1) | Equity mutual funds: Index equity
Pension and Other Postretirement Benefits
Fair value of plan assets	28	157
North America | Pension Plans | Quoted Prices in Active Markets (Level 1) | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Quoted Prices in Active Markets (Level 1) | Fixed income: Other
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Quoted Prices in Active Markets (Level 1) | Fixed income: Government and agency securities
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Quoted Prices in Active Markets (Level 1) | Fixed income: Corporate bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Quoted Prices in Active Markets (Level 1) | Fixed income: U.S.Treasury bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	14	61
North America | Pension Plans | Quoted Prices in Active Markets (Level 1) | Fixed income mutual funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0
North America | Pension Plans | Significant Other Observable Inputs (Level 2) | Defined Benefit Plan, Assets Before Receivables, Net
Pension and Other Postretirement Benefits
Fair value of plan assets	229	608
North America | Pension Plans | Significant Other Observable Inputs (Level 2) | Cash and cash equivalents
Pension and Other Postretirement Benefits
Fair value of plan assets	1	4
North America | Pension Plans | Significant Other Observable Inputs (Level 2) | Equity mutual funds: Index equity
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Significant Other Observable Inputs (Level 2) | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	16	34
North America | Pension Plans | Significant Other Observable Inputs (Level 2) | Fixed income: Other
Pension and Other Postretirement Benefits
Fair value of plan assets	6	7
North America | Pension Plans | Significant Other Observable Inputs (Level 2) | Fixed income: Government and agency securities
Pension and Other Postretirement Benefits
Fair value of plan assets	81	103
North America | Pension Plans | Significant Other Observable Inputs (Level 2) | Fixed income: Corporate bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	109	460
North America | Pension Plans | Significant Other Observable Inputs (Level 2) | Fixed income: U.S.Treasury bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Significant Other Observable Inputs (Level 2) | Fixed income mutual funds
Pension and Other Postretirement Benefits
Fair value of plan assets	16
North America | Pension Plans | Significant Unobservable Inputs (Level 3) | Defined Benefit Plan, Assets Before Receivables, Net
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Significant Unobservable Inputs (Level 3) | Cash and cash equivalents
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Significant Unobservable Inputs (Level 3) | Equity mutual funds: Index equity
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Significant Unobservable Inputs (Level 3) | Pooled Equity Funds
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Significant Unobservable Inputs (Level 3) | Fixed income: Other
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Significant Unobservable Inputs (Level 3) | Fixed income: Government and agency securities
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Significant Unobservable Inputs (Level 3) | Fixed income: Corporate bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	0	0
North America | Pension Plans | Significant Unobservable Inputs (Level 3) | Fixed income: U.S.Treasury bonds and notes
Pension and Other Postretirement Benefits
Fair value of plan assets	0	$ 0
North America | Pension Plans | Significant Unobservable Inputs (Level 3) | Fixed income mutual funds
Pension and Other Postretirement Benefits
Fair value of plan assets	$ 0

X

- Definition

Defined Benefit Plan, Plan Assets, Amount Prior To Redemption

+ References

No definition available.

+ Details

Name:	cf_DefinedBenefitPlanPlanAssetsAmountPriorToRedemption
Namespace Prefix:	cf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Defined Benefit Plan, Plan Assets, Receivable From Redemption

+ References

No definition available.

+ Details

Name:	cf_DefinedBenefitPlanPlanAssetsReceivableFromRedemption
Namespace Prefix:	cf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- 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.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(01)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(01)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(ii)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(02)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(ii)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Indicates level within fair value hierarchy and fair value measured at net asset value per share as practical expedient, of defined benefit plan asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(03)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(01)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanPlanAssetsFairValueByHierarchyAndNavExtensibleList
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_PooledPropertyFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_TwoFundsWithExposureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanSponsorLocationAxis=country_GB
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_PooledEquityFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DefinedBenefitPlanCashMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_PooledTargetReturnFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_FixedIncomePooledUKGovernmentIndexLinkedSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_FixedIncomePooledFixedIncomeFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_LiabilitydriveninvestmentfundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_PooledUKGovernmentSecuritiesFundsIndexLinkedSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_PooledGlobalDebtFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_PooledDiversifiedFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_CashAndCashFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel12And3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanSponsorLocationAxis=srt_NorthAmericaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_IndexEquityFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_OtherPlanAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_FixedIncomeFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_DefinedBenefitPlanAccrualsAndPayablesNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_DefinedBenefitPlanReceivablesNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=cf_DefinedBenefitPlanAssetsBeforeReceivablesAccrualsAndPayablesNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: