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Goodwill and Intangible Assets - Rollforward of Goodwill Activity by Reportable Segment (Detail) (USD $)
In Millions, unless otherwise specified
 9 Months Ended
Jun. 28, 2014
Goodwill [Roll Forward]  
Balance at September 28, 2013 $ 2,814.5
Disposition of a portion of a reporting unit (0.2)
Tax adjustments (0.6)
Foreign currency and other (2.6)
Balance at June 28, 2014 2,811.1
Diagnostics [Member]
  
Goodwill [Roll Forward]  
Balance at September 28, 2013 1,153.5
Disposition of a portion of a reporting unit (0.2)
Tax adjustments (0.6)
Foreign currency and other (0.6)
Balance at June 28, 2014 1,152.1
Breast Health [Member]
  
Goodwill [Roll Forward]  
Balance at September 28, 2013 636.4
Disposition of a portion of a reporting unit 0
Tax adjustments 0
Foreign currency and other (1.7)
Balance at June 28, 2014 634.7
GYN Surgical [Member]
  
Goodwill [Roll Forward]  
Balance at September 28, 2013 1,016.4
Disposition of a portion of a reporting unit 0
Tax adjustments 0
Foreign currency and other (0.3)
Balance at June 28, 2014 1,016.1
Skeletal Health [Member]
  
Goodwill [Roll Forward]  
Balance at September 28, 2013 8.2
Disposition of a portion of a reporting unit 0
Tax adjustments 0
Foreign currency and other 0
Balance at June 28, 2014 $ 8.2