XML 14 R39.htm IDEA: XBRL DOCUMENT v2.4.1.9

Derivatives Financial Instruments Derivative Financial Instruments - Schedule of Foreign Currency Forward Contracts (Details)

Mar. 31, 2015

Foreign Currency Forward Contract

Other Assets

USD ($)

Dec. 31, 2014

Foreign Currency Forward Contract

Other Assets

USD ($)

Mar. 31, 2015

Foreign Currency Forward Contract

Other Liabilities

USD ($)

Mar. 31, 2015

Foreign Exchange Forward Expected to Settle Quarterly

Counterparty C

Other Assets

USD ($)

Dec. 31, 2014

Foreign Exchange Forward Expected to Settle Quarterly

Counterparty C

Other Assets

USD ($)

Mar. 31, 2015

Foreign Exchange Forward Expected to Settle Quarterly

Counterparty C

Paying

USD ($)

Mar. 31, 2015

Foreign Exchange Forward Expected to Settle Quarterly

Counterparty C

Receiving

GBP (£)

Dec. 31, 2014

Foreign Exchange Forward Expected to Settle Monthly

Counterparty C

Other Assets

USD ($)

Mar. 31, 2015

Foreign Exchange Forward Expected to Settle Monthly

Counterparty C

Other Liabilities

USD ($)

Mar. 31, 2015

Foreign Exchange Forward Expected to Settle Monthly

Counterparty C

Paying

EUR (€)

Mar. 31, 2015

Foreign Exchange Forward Expected to Settle Monthly

Counterparty C

Receiving

USD ($)

Derivative

Notional amount

$ 21,000,000invest_DerivativeNotionalAmount
/ us-gaap_CounterpartyNameAxis
= amg_CounterpartyCMember
/ us-gaap_DerivativeInstrumentRiskAxis
= amg_ForeignExchangeForwardExpectedtoSettleQuarterlyMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember

£ 25,700,000invest_DerivativeNotionalAmount
/ us-gaap_CounterpartyNameAxis
= amg_CounterpartyCMember
/ us-gaap_DerivativeInstrumentRiskAxis
= amg_ForeignExchangeForwardExpectedtoSettleQuarterlyMember
/ us-gaap_PositionAxis
= us-gaap_LongMember

€ 11,300,000invest_DerivativeNotionalAmount
/ us-gaap_CounterpartyNameAxis
= amg_CounterpartyCMember
/ us-gaap_DerivativeInstrumentRiskAxis
= amg_ForeignExchangeForwardExpectedtoSettleMonthlyMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember

$ 7,000,000invest_DerivativeNotionalAmount
/ us-gaap_CounterpartyNameAxis
= amg_CounterpartyCMember
/ us-gaap_DerivativeInstrumentRiskAxis
= amg_ForeignExchangeForwardExpectedtoSettleMonthlyMember
/ us-gaap_PositionAxis
= us-gaap_LongMember

Foreign currency forward liabilities at fair value

3,200,000us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_CounterpartyNameAxis
= amg_CounterpartyCMember
/ us-gaap_DerivativeInstrumentRiskAxis
= amg_ForeignExchangeForwardExpectedtoSettleQuarterlyMember

^[1]

300,000us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_CounterpartyNameAxis
= amg_CounterpartyCMember
/ us-gaap_DerivativeInstrumentRiskAxis
= amg_ForeignExchangeForwardExpectedtoSettleQuarterlyMember

^[2]

(800,000)us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_CounterpartyNameAxis
= amg_CounterpartyCMember
/ us-gaap_DerivativeInstrumentRiskAxis
= amg_ForeignExchangeForwardExpectedtoSettleMonthlyMember

^[2]

(900,000)us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_CounterpartyNameAxis
= amg_CounterpartyCMember
/ us-gaap_DerivativeInstrumentRiskAxis
= amg_ForeignExchangeForwardExpectedtoSettleMonthlyMember

^[1]

Derivative asset

3,200,000us-gaap_DerivativeAssets
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember

^[2]

(500,000)us-gaap_DerivativeAssets
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember

^[2]

Derivative liability

$ 900,000us-gaap_DerivativeLiabilities
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember

^[2]

[1]	Fair value of $3.2 million is presented within Other assets and $(0.9) million is presented within Other liabilities. These amounts are expected to be reclassified into earnings within the next twelve months.
[2]	Aggregate fair value of $(0.5) million is presented within Other assets.

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958



Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313

+ Details

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

X

- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

+ Details

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

X

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958



Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313

+ Details

Name:	us-gaap_DerivativeLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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