Summary of Dividends Declared and Paid (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 28, 2013	Sep. 27, 2014
Dividends [Line Items]
Dividend Per Share	$ 0.47	$ 0.47	$ 0.47	$ 0.44	$ 0.44	$ 1.82
Amount	$ 2,750us-gaap_PaymentsOfDividends	$ 2,807us-gaap_PaymentsOfDividends	$ 2,830us-gaap_PaymentsOfDividends	$ 2,655us-gaap_PaymentsOfDividends	$ 2,739us-gaap_PaymentsOfDividends	$ 11,031us-gaap_PaymentsOfDividends

Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

Name:	us-gaap_PaymentsOfDividends
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration