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Equity (Tables) | 12 Months Ended
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Dec. 31, 2012
Equity [Abstract] |
Share activity | For the years ended December 31, 2012, 2011, and 2010, activity in the number of shares of common stock and treasury stock was as follows (in millions):
| Common Stock |  | Treasury Stock
Balance as of December 31, 2009 | 673 |  |  | (109 | )
Transactions in connection with stock-based compensation plans: |  |  |
Stock issuances | — |  |  | 5 |
Stock repurchases | — |  |  | (1 | )
Balance as of December 31, 2010 | 673 |  |  | (105 | )
Transactions in connection with stock-based compensation plans: |  |  |
Stock issuances | — |  |  | 5 |
Stock repurchases | — |  |  | (17 | )
Balance as of December 31, 2011 | 673 |  |  | (117 | )
Transactions in connection with stock-based compensation plans: |  |  |
Stock issuances | — |  |  | 6 |
Stock repurchases | — |  |  | (6 | )
Stock repurchases under buyback program | — |  |  | (4 | )
Balance as of December 31, 2012 | 673 |  |  | (121 | )
Income tax effects related to components of other comprehensive income | The following table reflects the tax effects allocated to each component of other comprehensive income for the years ended December 31, 2012, 2011, and 2010:
| Before-Tax Amount |  | Tax Expense (Benefit) |  | Net Amount
Year Ended December 31, 2012: |  |  |  |  |
Foreign currency translation adjustment | $ | 164 |  |  | $ | — |  |  | $ | 164 |
Pension and other postretirement benefits: |  |  |  |  |
Loss arising during the year related to: |  |  |  |  |
Net actuarial loss | (228 | ) |  | (79 | ) |  | (149 | )
Prior service cost | (9 | ) |  | (3 | ) |  | (6 | )
(Gain) loss reclassified into income related to: |  |  |  |  |
Net actuarial loss | 34 |  |  | 12 |  |  | 22 |
Prior service credit | (20 | ) |  | (7 | ) |  | (13 | )
Settlement | 12 |  |  | — |  |  | 12 |
Net loss on pension and other postretirement benefits | (211 | ) |  | (77 | ) |  | (134 | )
Derivative instruments designated and qualifying as cash flow hedges: |  |  |  |  |
Net gain arising during the year | 45 |  |  | 16 |  |  | 29 |
Net gain reclassified into income | (73 | ) |  | (26 | ) |  | (47 | )
Net loss on cash flow hedges | (28 | ) |  | (10 | ) |  | (18 | )
Other comprehensive income (loss) | $ | (75 | ) |  | $ | (87 | ) |  | $ | 12 |
| Before-Tax Amount |  | Tax Expense (Benefit) |  | Net Amount
Year Ended December 31, 2011: |  |  |  |  |
Foreign currency translation adjustment | $ | (122 | ) |  | $ | — |  |  | $ | (122 | )
Pension and other postretirement benefits: |  |  |  |  |
Loss arising during the year related to: |  |  |  |  |
Net actuarial loss | (285 | ) |  | (100 | ) |  | (185 | )
Prior service cost | (4 | ) |  | (1 | ) |  | (3 | )
(Gain) loss reclassified into income related to: |  |  |  |  |
Net actuarial loss | 14 |  |  | 4 |  |  | 10 |
Prior service credit | (21 | ) |  | (7 | ) |  | (14 | )
Settlement | 4 |  |  | 1 |  |  | 3 |
Net loss on pension and other postretirement benefits | (292 | ) |  | (103 | ) |  | (189 | )
Derivative instruments designated and qualifying as cash flow hedges: |  |  |  |  |
Net gain arising during the year | 32 |  |  | 11 |  |  | 21 |
Net gain reclassified into income | (3 | ) |  | (1 | ) |  | (2 | )
Net gain on cash flow hedges | 29 |  |  | 10 |  |  | 19 |
Other comprehensive loss | $ | (385 | ) |  | $ | (93 | ) |  | $ | (292 | )
Year Ended December 31, 2010: |  |  |  |  |
Foreign currency translation adjustment | $ | 158 |  |  | $ | — |  |  | $ | 158 |
Pension and other postretirement benefits: |  |  |  |  |  |
Gain (loss) arising during the year related to: |  |  |  |  |
Net actuarial loss | (40 | ) |  | (6 | ) |  | (34 | )
Prior service credit | 31 |  |  | 11 |  |  | 20 |
(Gain) loss reclassified into income related to: |  |  |  |  |
Net actuarial loss | 6 |  |  | 2 |  |  | 4 |
Prior service credit | (17 | ) |  | (6 | ) |  | (11 | )
Settlement | 4 |  |  | 1 |  |  | 3 |
Net gain (loss) on pension and other postretirement benefits | (16 | ) |  | 2 |  |  | (18 | )
Derivative instruments designated and qualifying as cash flow hedges: |  |  |  |  |  |
Net loss arising during the year | (2 | ) |  | (1 | ) |  | (1 | )
Net gain reclassified into income | (178 | ) |  | (62 | ) |  | (116 | )
Net loss on cash flow hedges | (180 | ) |  | (63 | ) |  | (117 | )
Other comprehensive income (loss) | $ | (38 | ) |  | $ | (61 | ) |  | $ | 23 |
Changes in components of accumulated other comprehensive income (loss) | Changes in the balances of each component of accumulated other comprehensive income (loss) were as follows (in millions):
| Foreign Currency Translation Adjustment |  | Pension/ OPEB Liability Adjustment |  | Net Gain (Loss) On Cash Flow Hedges |  | Accumulated Other Comprehensive Income (Loss)
Balance as of December 31, 2009 | $ | 465 |  |  | $ | (217 | ) |  | $ | 117 |  |  | $ | 365 |
Other comprehensive income (loss) | 158 |  |  | (18 | ) |  | (117 | ) |  | 23 |
Balance as of December 31, 2010 | 623 |  |  | (235 | ) |  | — |  |  | 388 |
Other comprehensive income (loss) | (122 | ) |  | (189 | ) |  | 19 |  |  | (292 | )
Balance as of December 31, 2011 | 501 |  |  | (424 | ) |  | 19 |  |  | 96 |
Other comprehensive income (loss) | 164 |  |  | (134 | ) |  | (18 | ) |  | 12 |
Balance as of December 31, 2012 | $ | 665 |  |  | $ | (558 | ) |  | $ | 1 |  |  | $ | 108 |

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- Definition Tabular disclosure of components of comprehensive income (loss) including, but not limited to: (a) foreign currency translation adjustments; (b) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (c) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (d) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (e) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (f) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (g) the net gain (loss) and net prior service cost or credit for pension plans 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 1 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e526-108580 + Details
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- Definition Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14643745&loc=d3e177068-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28,29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21553-112644 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 150 -Paragraph 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d),(e)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6403732&loc=d3e21300-112643 + Details
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