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Equity, Income Tax Effects on Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Income Tax Effects Related to Components of Other Comprehensive Income |  |  |  |
Foreign currency translation adjustment, before-tax amount | $ 150 | $ (64) | $ 76 | $ (268)
Pension and other postretirement benefits: |  |  |  |
Gain arising during the period related to plan amendments, before-tax amount |  |  | 0 | 328
Amounts reclassified into income related to: |  |  |  |
Net actuarial loss, before-tax amount | 9 | 15 | 17 | 29
Prior service credit, before-tax amount | (9) | (9) | (19) | (15)
Net gain (loss) on pension and other postretirement benefits, before-tax amount | 0 | 6 | (2) | 342
Derivative instruments designated and qualifying as cash flow hedges: |  |  |  |
Net gain (loss) arising during the period, before-tax amount | (3) | (10) | 4 | (9)
Net (gain) loss reclassified into income, before-tax amount | 0 | 8 | (3) | 5
Net gain (loss) on cash flow hedges, before-tax amount | (3) | (2) | 1 | (4)
Other comprehensive income (loss), before-tax amount | 147 | (60) | 75 | 70
Foreign currency translation adjustment, tax expense (benefit) | 0 | 0 | 0 | 0
Pension and other postretirement benefits: |  |  |  |
Gain arising during the period related to plan amendments, tax expense (benefit) |  |  | 0 | 115
Amounts reclassified into income related to: |  |  |  |
Net actuarial loss, tax expense (benefit) | 3 | 5 | 6 | 10
Prior service credit, tax expense (benefit) | (5) | (4) | (8) | (6)
Net gain (loss) on pension and other postretirement benefits, tax expense (benefit) | (2) | 1 | (2) | 119
Derivative instruments designated and qualifying as cash flow hedges: |  |  |  |
Net gain (loss) arising during the period, tax expense (benefit) | 0 | (3) | 2 | (3)
Net (gain) loss reclassified into income, tax expense (benefit) | 0 | 3 | (1) | 2
Net gain (loss) on cash flow hedges, tax expense (benefit) | 0 | 0 | 1 | (1)
Other comprehensive income (loss), tax expense (benefit) | (2) | 1 | (1) | 118
Foreign currency translation adjustment, net | 150 | (64) | 76 | (268)
Pension and other postretirement benefits: |  |  |  |
Gain arising during the period related to plan amendments, net |  |  | 0 | 213
Amounts reclassified into income related to: |  |  |  |
Net actuarial loss, net | 6 | 10 | 11 | 19
Prior service credit, net | (4) | (5) | (11) | (9)
Net gain (loss) on pension and other postretirement benefits, net | 2 | 5 | 0 | 223
Derivative instruments designated and qualifying as cash flow hedges: |  |  |  |
Net gain (loss) arising during the period, net | (3) | (7) | 2 | (6)
Net (gain) loss reclassified into income, net | 0 | 5 | (2) | 3
Net gain (loss) on cash flow hedges, net | (3) | (2) | 0 | (3)
Other comprehensive income (loss) | $ 149 | $ (61) | $ 76 | $ (48)

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- Definition Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for actuarial gain (loss) related to pension and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580 + Details
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- Definition Amount of tax expense (benefit) allocated to other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 11 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=18498875&loc=d3e39076-109324 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580 + Details
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- Definition Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + 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 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993 + Details
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- Definition Amount of tax expense (benefit), before reclassification adjustments, related to increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580 + Details
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- Definition Amount after tax of credit of benefit changes attributable to plan participant’s prior service and the decrease in the value of the projected benefit obligation related to a change in an actuarial assumption resulting from a plan amendment that has not been recognized in net periodic benefit credit. + References No definition available. + Details
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