Earnings Per Share (Tables)

12 Months Ended

Jul. 03, 2015

Earnings Per Share [Abstract]

Schedule of computation of basic and diluted net income (loss) per share

	Fiscal Years Ended
(In millions, except per share data)	July 3, 2015		June 27, 2014		June 28, 2013
Numerator:
Net income attributable to Seagate Technology plc	$	1,742	$	1,570	$	1,838
Number of shares used in per share calculations:
Total shares for purposes of calculating basic net income per share attributable to Seagate Technology plc	324		337		370
Weighted-average effect of dilutive securities:
Employee equity award plans	7		10		12
Total shares for purpose of calculating diluted net income per share attributable to Seagate Technology plc	331		347		382
Net income per share attributable to Seagate Technology plc shareholders:
Basic	$	5.38	$	4.66	$	4.97
Diluted	$	5.26	$	4.52	$	4.81

Schedule of potential shares excluded from the computation of diluted net income (loss) per share

	Fiscal Years Ended
(In millions)	July 3, 2015	June 27, 2014	June 28, 2013
Employee equity award plans	—	—	—