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Consolidated Statements of Equity (USD $) In Millions, unless otherwise specified | Total | Parent [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Treasury Stock [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2009 | $ 14,725 | $ 14,725 | $ 7 | $ 7,896 | $ (6,721) | $ 13,178 | $ 365 | $ 0
Increase (Decrease) in Equity Roll Forward |  |  |  |  |  |  |  |
Net income | 324 | 324 | 0 | 0 | 0 | 324 | 0 | 0
Dividends on common stock | (114) | (114) | 0 | 0 | 0 | (114) | 0 | 0
Stock-based compensation expense | 54 | 54 | 0 | 54 | 0 | 0 | 0 | 0
Tax deduction in excess of stock-based compensation expense | 6 | 6 | 0 | 6 | 0 | 0 | 0 | 0
Transactions in connection with stock-based compensation plans: |  |  |  |  |  |  |  |
Stock issuances | 20 | 20 | 0 | (252) | 272 | 0 | 0 | 0
Stock repurchases | (13) | (13) | 0 | 0 | (13) | 0 | 0 | 0
Other comprehensive income (loss) | 23 | 23 | 0 | 0 | 0 | 0 | 23 | 0
Ending balance at Dec. 31, 2010 | 15,025 | 15,025 | 7 | 7,704 | (6,462) | 13,388 | 388 | 0
Increase (Decrease) in Equity Roll Forward |  |  |  |  |  |  |  |
Net income | 2,089 | 2,090 | 0 | 0 | 0 | 2,090 | 0 | (1)
Dividends on common stock | (169) | (169) | 0 | 0 | 0 | (169) | 0 | 0
Stock-based compensation expense | 57 | 57 | 0 | 57 | 0 | 0 | 0 | 0
Tax deduction in excess of stock-based compensation expense | 22 | 22 | 0 | 22 | 0 | 0 | 0 | 0
Transactions in connection with stock-based compensation plans: |  |  |  |  |  |  |  |
Stock issuances | 49 | 49 | 0 | (287) | 336 | 0 | 0 | 0
Stock repurchases | (359) | (359) | 0 | (10) | (349) | 0 | 0 | 0
Contributions from noncontrolling interest | 23 | 0 | 0 | 0 | 0 | 0 | 0 | 23
Recognition of noncontrolling interests in MLP in connection with Pembroke Acquisition | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 5
Acquisition of noncontrolling interests in MLP | (5) | 0 | 0 | 0 | 0 | 0 | 0 | (5)
Other comprehensive income (loss) | (292) | (292) | 0 | 0 | 0 | 0 | (292) | 0
Ending balance at Dec. 31, 2011 | 16,445 | 16,423 | 7 | 7,486 | (6,475) | 15,309 | 96 | 22
Increase (Decrease) in Equity Roll Forward |  |  |  |  |  |  |  |
Net income | 2,080 | 2,083 | 0 | 0 | 0 | 2,083 | 0 | (3)
Dividends on common stock | (360) | (360) | 0 | 0 | 0 | (360) | 0 | 0
Stock-based compensation expense | 57 | 57 | 0 | 57 | 0 | 0 | 0 | 0
Tax deduction in excess of stock-based compensation expense | 29 | 29 | 0 | 29 | 0 | 0 | 0 | 0
Transactions in connection with stock-based compensation plans: |  |  |  |  |  |  |  |
Stock issuances | 59 | 59 | 0 | (260) | 319 | 0 | 0 | 0
Stock repurchases | (153) | (153) | 0 | 10 | (163) | 0 | 0 | 0
Stock repurchases under buyback program | (118) | (118) | 0 | 0 | (118) | 0 | 0 | 0
Contributions from noncontrolling interest | 44 | 0 | 0 | 0 | 0 | 0 | 0 | 44
Other comprehensive income (loss) | 12 | 12 | 0 | 0 | 0 | 0 | 12 | 0
Ending balance at Dec. 31, 2012 | $ 18,095 | $ 18,032 | $ 7 | $ 7,322 | $ (6,437) | $ 17,032 | $ 108 | $ 63

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- Definition Represents the purchase by the parent of an additional equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4M -URI http://asc.fasb.org/extlink&oid=18733213&loc=SL4591554-111686 Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A + Details
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- Definition Equity impact of cash dividends declared by an entity during the period for all classes of stock (common, preferred, etc.). This element includes paid and unpaid dividends declared during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 14 -Subparagraph l -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 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 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 + Details
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- Definition Represents an increase in noncontrolling interest from issuance of additional equity interests to noncontrolling interest holders or the sale of a portion of the parent's controlling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4616395-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(2) -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569655-111683 + Details
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- Definition Net of tax amount of other comprehensive income (loss) attributable to both parent entity and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669619-108580 + Details
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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4568740-111683 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A3 -Appendix A Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 26 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4I -URI http://asc.fasb.org/extlink&oid=18733213&loc=SL4590271-111686 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4568447-111683 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 25 -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. + Details
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- Definition Gross value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. + References No definition available. + Details
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