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v2.4.1.9

Changes in Carrying Amount of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013
Goodwill [Roll Forward] |  |
Beginning Balance | $ 651,049 us-gaap_Goodwill | $ 510,836 us-gaap_Goodwill
Acquisitions | 2,615 us-gaap_GoodwillAcquiredDuringPeriod | 134,776 us-gaap_GoodwillAcquiredDuringPeriod
Currency translation | (23,402)us-gaap_GoodwillTranslationAdjustments | 5,437 us-gaap_GoodwillTranslationAdjustments
Ending Balance | 630,262 us-gaap_Goodwill | 651,049 us-gaap_Goodwill
Metal Containers [Member] |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 124,491 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = slgn_MetalContainersMember | 121,872 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = slgn_MetalContainersMember
Acquisitions | 408 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = slgn_MetalContainersMember | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = slgn_MetalContainersMember
Currency translation | (7,571)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = slgn_MetalContainersMember | 2,619 us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = slgn_MetalContainersMember
Ending Balance | 117,328 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = slgn_MetalContainersMember | 124,491 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = slgn_MetalContainersMember
Closures [Member] |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 295,863 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = slgn_ClosuresMember | 160,597 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = slgn_ClosuresMember
Acquisitions | 2,207 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = slgn_ClosuresMember | 131,041 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = slgn_ClosuresMember
Currency translation | (14,189)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = slgn_ClosuresMember | 4,225 us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = slgn_ClosuresMember
Ending Balance | 283,881 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = slgn_ClosuresMember | 295,863 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = slgn_ClosuresMember
Plastic Containers [Member] |  |
Goodwill [Roll Forward] |  |
Beginning Balance | 230,695 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = slgn_PlasticContainersMember | 228,367 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = slgn_PlasticContainersMember
Acquisitions | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = slgn_PlasticContainersMember | 3,735 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = slgn_PlasticContainersMember
Currency translation | (1,642)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = slgn_PlasticContainersMember | (1,407)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = slgn_PlasticContainersMember
Ending Balance | $ 229,053 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = slgn_PlasticContainersMember | $ 230,695 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = slgn_PlasticContainersMember

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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