Stock-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		3 Months Ended	9 Months Ended
	Dec. 30, 2011	Dec. 31, 2010	Dec. 30, 2011	Dec. 31, 2010	Jul. 01, 2011 Restricted Stock Awards [Member]	Jul. 01, 2011 Performance Based Restricted Stock Units [Member]	Jul. 01, 2011 Assumed Clearwell Stock Options [Member]	Dec. 30, 2011 Assumed Clearwell Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Awards, shares					91,368
Fair value of restricted stock, per share					$ 19.70
Allocated share-based compensation expense	$ 46	$ 37	$ 123	$ 108	$ 2
Weighted average grant date fair value						$ 23.58
Common stock exchange ratio							0.40906
Allocation of common stock to assumed options							1,000,000
Cash consideration upon vesting, per share							$ 7.65
Total value of the early exercised unvested shares							4
Unrecognized compensation costs related to unvested stock options								9
Unrecognized compensation costs related to early exercise of unvested shares								$ 2.6