CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (USD $)
In Millions, unless otherwise specified
Total
Ordinary Shares [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Loss [Member]
Accumulated Deficit [Member]
Parent [Member]
Noncontrolling Interest [Member]
Total Seagate Technology plc Shareholders' Equity, Starting Balance at Jun. 27, 2014 $ 2,832 $ 0 $ 5,511 $ (2) $ (2,677) $ 2,832  
Noncontrolling Interest Equity, Starting Balance at Jun. 27, 2014 0           0
Total Equity, Beginning balance at Jun. 27, 2014 2,832            
Starting Balance (in shares) at Jun. 27, 2014   327          
Increase (Decrease) in Stockholders' Equity              
Net income 1,605       1,605 1,605 0
Other comprehensive income (loss) (31)     (31)   (31)   
Issuance of ordinary shares under employee stock plans 91   91     91  
Issuance of ordinary shares under employee stock plans (in shares)   6          
Repurchases of ordinary shares (907)       (907) (907)  
Repurchases of ordinary shares (in shares) (15.0) (15.0)          
Dividends to shareholders (493)       (493) (493)  
Share-based compensation 106   106     106  
Others (12)   (12)        
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests            12   
Total Seagate Technology plc Shareholders' Equity, Ending Balance at Apr. 03, 2015 3,191 0 5,696 (33) (2,472) 3,191  
Noncontrolling Interest Equity, Ending Balance at Apr. 03, 2015 0           0
Total Equity, Ending balance at Apr. 03, 2015 $ 3,191            
Ending Balance (in shares) at Apr. 03, 2015   318