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Shareholders' Equity - Changes in AOCI (Details) (USD $) In Millions, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 28, 2014 | Sep. 29, 2013
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |
Balance, | $ (1,185) | $ (2,775)
Other comprehensive income (loss) before tax | (111) | 214
Provision for income tax, net | 41 | 108
Other comprehensive (loss) income net of tax | (152) | 106
Balance, | (1,337) | (2,669)
Gains (Losses) on Cash Flow Hedges |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |
Balance, | 9 | 6
Other comprehensive income (loss) before tax | (69) | 0
Provision for income tax, net | (18) | (1)
Other comprehensive (loss) income net of tax | (51) | 1
Balance, | (42) | 7
Unrealized Gains on Securities |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |
Balance, | 15 | 7
Other comprehensive income (loss) before tax | 7 | 7
Provision for income tax, net | 3 | 2
Other comprehensive (loss) income net of tax | 4 | 5
Balance, | 19 | 12
Foreign Currency Translation Adjustments |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |
Balance, | 974 | 1,092
Other comprehensive income (loss) before tax | (226) | (92)
Provision for income tax, net | (5) | (1)
Other comprehensive (loss) income net of tax | (221) | (91)
Balance, | 753 | 1,001
Changes in Retirement Plans’ Funded Status |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |
Balance, | (2,183) | (3,880)
Other comprehensive income (loss) before tax | 177 | 299
Provision for income tax, net | 61 | 108
Other comprehensive (loss) income net of tax | 116 | 191
Balance, | $ (2,067) | $ (3,689)

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- Definition Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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- Definition Amount after tax of other comprehensive income (loss) attributable to parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569643-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 + Details
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- Definition Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569643-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 + Details
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