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v3.3.1.900

Pension, Retiree Medical and Savings Plans (Categorized Plan Assets Measured at Fair Value) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 26, 2015 | Dec. 27, 2014 | Dec. 28, 2013
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Contribution Plan, Cost Recognized |  | $ 148 | $ 130 | $ 122
U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 11,397 | 12,224 | 11,462
International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 2,823 | 3,002 | $ 2,777
US Plan Assets [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 11,751 | 12,639 |
U.S. Common Stock | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[2] | 1,415 | 966 |
U.S. Common Stock | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 4 | 5 |
U.S. Common Stock | Level 1 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[2] | 1,415 |  |
U.S. Common Stock | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 4 |  |
U.S. Common Stock | Level 2 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[2] | 0 |  |
U.S. Common Stock | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 0 |  |
U.S. Common Stock | Level 3 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[2] | 0 |  |
U.S. Common Stock | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 0 |  |
U.S. Commingled Funds | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[3],[4] | 2,369 | 3,437 |
U.S. Commingled Funds | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [3] | 198 | 373 |
U.S. Commingled Funds | Level 1 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[3],[4] | 0 |  |
U.S. Commingled Funds | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [3] | 0 |  |
U.S. Commingled Funds | Level 2 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[3],[4] | 2,369 |  |
U.S. Commingled Funds | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [3] | 198 |  |
U.S. Commingled Funds | Level 3 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[3],[4] | 0 |  |
U.S. Commingled Funds | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [3] | 0 |  |
International Common Stock [Member] | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[2] | 1,203 | 1,488 |
International Common Stock [Member] | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 148 | 171 |
International Common Stock [Member] | Level 1 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[2] | 1,203 |  |
International Common Stock [Member] | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 148 |  |
International Common Stock [Member] | Level 2 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[2] | 0 |  |
International Common Stock [Member] | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 0 |  |
International Common Stock [Member] | Level 3 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[2] | 0 |  |
International Common Stock [Member] | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [2] | 0 |  |
International Commingled Fund | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[5] | 1,113 | 876 |
International Commingled Fund | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [5] | 1,142 | 918 |
International Commingled Fund | Level 1 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[5] | 0 |  |
International Commingled Fund | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [5] | 0 |  |
International Commingled Fund | Level 2 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[5] | 1,113 |  |
International Commingled Fund | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [5] | 1,142 |  |
International Commingled Fund | Level 3 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[5] | 0 |  |
International Commingled Fund | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [5] | 0 |  |
Preferred Stock | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6] | 9 | 22 |
Preferred Stock | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [6] | 0 | 1 |
Preferred Stock | Level 1 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6] | 0 |  |
Preferred Stock | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [6] | 0 |  |
Preferred Stock | Level 2 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6] | 9 |  |
Preferred Stock | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [6] | 0 |  |
Preferred Stock | Level 3 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6] | 0 |  |
Preferred Stock | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [6] | 0 |  |
Government Securities | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6] | 1,181 | 1,279 |
Government Securities | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [6] | 433 | $ 454 |
Government Securities | Level 1 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6] | 0 |  |
Government Securities | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [6] | 0 |  |
Government Securities | Level 2 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6] | 1,181 |  |
Government Securities | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [6] | 433 |  |
Government Securities | Level 3 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6] | 0 |  |
Government Securities | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [6] | 0 |  |
Corporate Bonds |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Representation of one fund in total U.S. plan assets |  |  | 23.00% |
Corporate Bonds | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6],[7] | 3,191 | $ 3,338 |
Corporate Bonds | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [6] | 439 | 320 |
Corporate Bonds | Level 1 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6],[7] | 0 |  |
Corporate Bonds | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [6] | 0 |  |
Corporate Bonds | Level 2 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6],[7] | 3,191 |  |
Corporate Bonds | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [6] | 439 |  |
Corporate Bonds | Level 3 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6],[7] | 0 |  |
Corporate Bonds | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [6] | 0 |  |
Mortgage-Backed Securities | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6] | 207 | 274 |
Mortgage-Backed Securities | Level 1 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6] | 0 |  |
Mortgage-Backed Securities | Level 2 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6] | 207 |  |
Mortgage-Backed Securities | Level 3 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[6] | 0 |  |
Contracts With Insurance Companies | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[8] | 7 | 6 |
Contracts With Insurance Companies | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [8] | 32 | 36 |
Contracts With Insurance Companies | Level 1 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[8] | 0 |  |
Contracts With Insurance Companies | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [8] | 0 |  |
Contracts With Insurance Companies | Level 2 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[8] | 0 |  |
Contracts With Insurance Companies | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [8] | 0 |  |
Contracts With Insurance Companies | Level 3 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[8] | 7 |  |
Contracts With Insurance Companies | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [8] | 32 |  |
Cash And Cash Equivalents | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 267 | 267 |
Cash And Cash Equivalents | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 12 | 21 |
Cash And Cash Equivalents | Level 1 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 267 |  |
Cash And Cash Equivalents | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 12 |  |
Cash And Cash Equivalents | Level 2 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 0 |  |
Cash And Cash Equivalents | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 0 |  |
Cash And Cash Equivalents | Level 3 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 0 |  |
Cash And Cash Equivalents | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 0 |  |
Sub-Total U.S. Plan Assets | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 11,697 | 12,582 |
Sub-Total U.S. Plan Assets | Level 1 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 2,885 |  |
Sub-Total U.S. Plan Assets | Level 2 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 8,070 |  |
Sub-Total U.S. Plan Assets | Level 3 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 742 |  |
Fixed Income Commingled Funds | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [9] | 308 | 517 |
Fixed Income Commingled Funds | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [9] | 0 |  |
Fixed Income Commingled Funds | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [9] | 308 |  |
Fixed Income Commingled Funds | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [9] | 0 |  |
Currency Commingled Funds | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [10] | 0 | 87 |
Currency Commingled Funds | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [10] | 0 |  |
Currency Commingled Funds | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [10] | 0 |  |
Currency Commingled Funds | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [10] | 0 |  |
Real Estate Funds [Member] | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[11] | 735 | 629 |
Real Estate Funds [Member] | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [11] | 100 | 92 |
Real Estate Funds [Member] | Level 1 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[11] | 0 |  |
Real Estate Funds [Member] | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [11] | 0 |  |
Real Estate Funds [Member] | Level 2 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[11] | 0 |  |
Real Estate Funds [Member] | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [11] | 0 |  |
Real Estate Funds [Member] | Level 3 | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1],[11] | 735 |  |
Real Estate Funds [Member] | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [11] | 100 |  |
Sub-Total International Plan Assets | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 2,816 | 2,995 |
Sub-Total International Plan Assets | Level 1 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 164 |  |
Sub-Total International Plan Assets | Level 2 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 2,520 |  |
Sub-Total International Plan Assets | Level 3 | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | 132 |  |
Dividends And Interest Receivable | U.S. Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | [1] | 54 | 57 |
Dividends And Interest Receivable | International Plan Assets |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets |  | $ 7 | $ 7 |
Large-Cap Fund(s) In U.S. Commingled Funds |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Representation of one fund in total U.S. plan assets |  | 18.00% | 25.00% |
[1] | 2015 and 2014 amounts include $354 million and $415 million, respectively, of retiree medical plan assets that are restricted for purposes of providing health benefits for U.S. retirees and their beneficiaries.
[2] | Based on quoted market prices in active markets.
[3] | Based on the fair value of the investments owned by these funds that track various U.S. large, mid-cap and small company indices.
[4] | Includes one large-cap fund that represents 18% and 25% of total U.S. plan assets for 2015 and 2014, respectively.
[5] | Based on the fair value of the investments owned by these funds that track various non-U.S. equity indices.
[6] | Based on quoted bid prices for comparable securities in the marketplace and broker/dealer quotes in active markets.
[7] | Corporate bonds of U.S.-based companies represent 23% of total U.S. plan assets for both 2015 and 2014.
[8] | Based on the fair value of the contracts as determined by the insurance companies using inputs that are not observable.
[9] | Based on the fair value of the investments owned by these funds that track various government and corporate bond indices.
[10] | Based on the fair value of the investments owned by this fund that invests primarily in derivatives to hedge currency exposure.
[11] | Based on the appraised value of the investments owned by these funds as determined by independent third parties using inputs that are not observable.

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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