XML 27 R42.htm IDEA: XBRL DOCUMENT v2.4.1.9
ACQUISITIONS (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended 1 Months Ended
Feb. 22, 2015
Feb. 23, 2014
Jul. 31, 2014
Sep. 30, 2013
May 25, 2014
Business Acquisitions [Line Items]          
Payments to acquire business, net $ 74.7us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired $ 39.9us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired      
Purchase price allocated to goodwill 6,305.0us-gaap_Goodwill       7,828.5us-gaap_Goodwill
TaiMei Potato Industry Limited          
Business Acquisitions [Line Items]          
Payments to acquire business, gross     91.8us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= cag_TaiMeiPotatoIndustryLimitedMember
   
Payments to acquire business, net     74.7us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ us-gaap_BusinessAcquisitionAxis
= cag_TaiMeiPotatoIndustryLimitedMember
   
Purchase price allocated to goodwill     20.2us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= cag_TaiMeiPotatoIndustryLimitedMember
   
Purchase price allocated to other intangible assets     3.3us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= cag_TaiMeiPotatoIndustryLimitedMember
   
Harlan Bakeries          
Business Acquisitions [Line Items]          
Payments to acquire business, gross       $ 39.9us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= cag_HarlanBakeriesMember