Supplemental Guarantor Condensed Consolidating Financials - Schedule of Supplemental Condensed Consolidating Balance Sheet (Detail) (USD $)
In Millions, unless otherwise specified
Mar. 28, 2015
Sep. 27, 2014
Mar. 29, 2014
Sep. 28, 2013
Current assets:        
Cash and cash equivalents $ 670.5 $ 736.1 $ 484.5 $ 822.5
Restricted cash 4.6 5.5    
Accounts receivable, net 381.0 396.0    
Inventories 298.2 330.6    
Deferred income tax assets 0 39.4    
Prepaid income taxes 21.1 22.4    
Prepaid expenses and other current assets 40.9 35.8    
Intercompany receivables 0 0    
Total current assets 1,416.3 1,565.8    
Property, plant and equipment, net 451.0 461.9    
Intangible assets, net 3,225.8 3,433.6    
Goodwill 2,809.1 2,810.8    
Other assets 129.6 142.6    
Long term intercompany receivables 0 0    
Investment in subsidiaries 0 0    
Total assets 8,031.8 8,414.7    
Current liabilities:        
Current portion of long-term debt 581.7 114.5    
Accounts payable 73.7 92.1    
Accrued expenses 217.8 262.1    
Deferred revenue 156.5 150.9    
Deferred Tax Liabilities, Net, Current 14.5 0    
Intercompany payables 0 0    
Total current liabilities 1,044.2 619.6    
Long-term debt, net of current portion 3,358.1 4,153.2    
Deferred income tax liabilities 1,243.5 1,375.4    
Deferred revenue 17.6 20.1    
Long-term intercompany payables 0 0    
Other long-term liabilities 199.8 183.4    
Total stockholders’ equity 2,168.6 2,063.0    
Total liabilities and stockholders’ equity 8,031.8 8,414.7    
Eliminations        
Current assets:        
Cash and cash equivalents 0 0 0 0
Restricted cash 0 0    
Accounts receivable, net 0 0    
Inventories 0 0    
Deferred income tax assets (11.2) 0    
Prepaid income taxes (0.3) (1.1)    
Prepaid expenses and other current assets 0 0    
Intercompany receivables (2,861.9) (2,720.2)    
Total current assets (2,873.4) (2,721.3)    
Property, plant and equipment, net 0 0    
Intangible assets, net (10.5) (10.7)    
Goodwill 0 0    
Other assets 0 0    
Long term intercompany receivables (13.0) (13.0)    
Investment in subsidiaries (8,555.3) (8,747.7)    
Total assets (11,452.2) (11,492.7)    
Current liabilities:        
Current portion of long-term debt 0 0    
Accounts payable 0 0    
Accrued expenses (0.3) (1.1)    
Deferred revenue 0 0    
Deferred Tax Liabilities, Net, Current (11.2)      
Intercompany payables (2,862.2) (2,720.4)    
Total current liabilities (2,873.7) (2,721.5)    
Long-term debt, net of current portion 0 0    
Deferred income tax liabilities 0 0    
Deferred revenue 0 0    
Long-term intercompany payables (13.0) (13.0)    
Other long-term liabilities 0 0    
Total stockholders’ equity (8,565.5) (8,758.2)    
Total liabilities and stockholders’ equity (11,452.2) (11,492.7)    
Parent/Issuer        
Current assets:        
Cash and cash equivalents 370.9 288.1 139.3 321.5
Restricted cash 0 0    
Accounts receivable, net 125.3 128.4    
Inventories 90.7 88.6    
Deferred income tax assets 0 26.2    
Prepaid income taxes 18.3 20.3    
Prepaid expenses and other current assets 22.6 16.2    
Intercompany receivables 0 0    
Total current assets 627.8 567.8    
Property, plant and equipment, net 26.8 29.7    
Intangible assets, net 22.2 25.1    
Goodwill 328.5 282.4    
Other assets 80.4 88.4    
Long term intercompany receivables 0 0    
Investment in subsidiaries 8,342.7 8,526.0    
Total assets 9,428.4 9,519.4    
Current liabilities:        
Current portion of long-term debt 581.7 114.5    
Accounts payable 28.8 34.8    
Accrued expenses 119.0 139.4    
Deferred revenue 118.6 113.5    
Deferred Tax Liabilities, Net, Current 25.7      
Intercompany payables 2,820.2 2,676.2    
Total current liabilities 3,694.0 3,078.4    
Long-term debt, net of current portion 3,358.1 4,153.2    
Deferred income tax liabilities 50.5 90.9    
Deferred revenue 7.9 8.3    
Long-term intercompany payables 13.0 13.0    
Other long-term liabilities 136.3 112.6    
Total stockholders’ equity 2,168.6 2,063.0    
Total liabilities and stockholders’ equity 9,428.4 9,519.4    
Guarantor Subsidiaries        
Current assets:        
Cash and cash equivalents 148.2 287.8 242.9 387.5
Restricted cash 0 0    
Accounts receivable, net 178.0 182.5    
Inventories 163.8 190.1    
Deferred income tax assets 10.2 12.1    
Prepaid income taxes 3.1 3.2    
Prepaid expenses and other current assets 9.5 11.0    
Intercompany receivables 2,850.8 2,702.1    
Total current assets 3,363.6 3,388.8    
Property, plant and equipment, net 336.1 337.1    
Intangible assets, net 3,175.1 3,377.3    
Goodwill 2,390.4 2,390.9    
Other assets 47.9 52.7    
Long term intercompany receivables 0 0    
Investment in subsidiaries 212.6 221.7    
Total assets 9,525.7 9,768.5    
Current liabilities:        
Current portion of long-term debt 0 0    
Accounts payable 33.4 46.1    
Accrued expenses 59.8 69.5    
Deferred revenue 10.2 7.4    
Deferred Tax Liabilities, Net, Current 0      
Intercompany payables 0 0    
Total current liabilities 103.4 123.0    
Long-term debt, net of current portion 0 0    
Deferred income tax liabilities 1,189.2 1,279.1    
Deferred revenue 3.8 3.6    
Long-term intercompany payables 0 0    
Other long-term liabilities 29.1 34.3    
Total stockholders’ equity 8,200.2 8,328.5    
Total liabilities and stockholders’ equity 9,525.7 9,768.5    
Non-Guarantor Subsidiaries        
Current assets:        
Cash and cash equivalents 151.4 160.2 102.3 113.5
Restricted cash 4.6 5.5    
Accounts receivable, net 77.7 85.1    
Inventories 43.7 51.9    
Deferred income tax assets 1.0 1.1    
Prepaid income taxes 0 0    
Prepaid expenses and other current assets 8.8 8.6    
Intercompany receivables 11.1 18.1    
Total current assets 298.3 330.5    
Property, plant and equipment, net 88.1 95.1    
Intangible assets, net 39.0 41.9    
Goodwill 90.2 137.5    
Other assets 1.3 1.5    
Long term intercompany receivables 13.0 13.0    
Investment in subsidiaries 0 0    
Total assets 529.9 619.5    
Current liabilities:        
Current portion of long-term debt 0 0    
Accounts payable 11.5 11.2    
Accrued expenses 39.3 54.3    
Deferred revenue 27.7 30.0    
Deferred Tax Liabilities, Net, Current 0      
Intercompany payables 42.0 44.2    
Total current liabilities 120.5 139.7    
Long-term debt, net of current portion 0 0    
Deferred income tax liabilities 3.8 5.4    
Deferred revenue 5.9 8.2    
Long-term intercompany payables 0 0    
Other long-term liabilities 34.4 36.5    
Total stockholders’ equity 365.3 429.7    
Total liabilities and stockholders’ equity $ 529.9 $ 619.5