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Income Taxes (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Feb. 28, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Mar. 30, 2013 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 18, 2015 | Dec. 19, 2014
Income Taxes |  |  |  |  |  |  |  |  |
Federal income tax rate (as a percent) |  |  |  |  | 35.00% | 35.00% | 35.00% |  |
Reconciliation of computed expected tax expense excluding non-controlling interest to income tax expense (benefit) attributable to continuing operations |  |  |  |  |  |  |  |  |
Computed "expected" tax expense excluding non-controlling interest |  |  |  |  | $ 84 | $ 187 | $ 83 |  |
Adjustments to tax expense attributable to: |  |  |  |  |  |  |  |  |
Foreign tax differences |  |  |  |  | 22 | 4 | 2 |  |
Tax-exempt income |  |  |  |  | (11) | (9) | (33) |  |
State income taxes, net of federal benefit |  |  |  |  | 1 | 10 | 3 |  |
Federal tax credits |  |  |  |  | (16) | (12) | (21) |  |
Domestic manufacturing deduction |  |  |  |  | (8) | (11) | (2) |  |
Other |  |  |  |  | (3) | (1) |  |  |
Income tax expense |  |  |  |  | 69 | 168 | 32 |  |
Amount of refund claims for prior years not previously treated as tax-exempt included in income tax benefit recognized |  |  |  |  |  |  | 17 |  |
Components of earnings before income taxes |  |  |  |  |  |  |  |  |
United States |  |  |  |  | 196 | 472 | 164 |  |
Foreign |  |  |  |  | 44 | 63 | 80 |  |
Total earnings excluding non-controlling interest |  |  |  |  | 240 | 535 | 244 |  |
Less: Net income attributable to noncontrolling interest |  |  |  |  | (1) | (1) | (2) |  |
Earnings (loss) before income taxes |  |  |  |  | 241 | 536 | 246 |  |
Current: |  |  |  |  |  |  |  |  |
Federal |  |  |  |  | 52 | 111 | (34) |  |
Foreign |  |  |  |  | 20 | 20 | 28 |  |
State and local |  |  |  |  | 6 | 12 | 3 |  |
Deferred: |  |  |  |  |  |  |  |  |
Federal |  |  |  |  | (14) | 20 | 25 |  |
Foreign |  |  |  |  | 8 | 1 | 5 |  |
State and local |  |  |  |  | (3) | 4 | 5 |  |
Income tax expense |  |  |  |  | 69 | 168 | 32 |  |
Unrealized changes in other comprehensive income |  |  |  |  | 0 | (27) | 10 |  |
Total income taxes |  |  |  |  | 69 | 141 | 42 |  |
Income taxes receivable |  | $ 33 | $ 49 |  | 33 | 49 |  |  |
Income taxes payable |  | 4 | 5 |  | 4 | 5 |  |  |
Deferred income tax liabilities: |  |  |  |  |  |  |  |  |
Depreciation |  | 112 | 107 |  | 112 | 107 |  |  |
Domestic partnerships |  | 53 | 49 |  | 53 | 49 |  |  |
LIFO |  | 11 | 42 |  | 11 | 42 |  |  |
Cash basis farming adjustment |  | 9 | 10 |  | 9 | 10 |  |  |
Other |  | 9 | 4 |  | 9 | 4 |  |  |
Aggregate deferred income tax liabilities |  | 194 | 212 |  | 194 | 212 |  |  |
Deferred income tax assets: |  |  |  |  |  |  |  |  |
Reserves/accruals |  | 103 | 111 |  | 103 | 111 |  |  |
Deferred earnings of foreign subsidiaries |  | 36 | 35 |  | 36 | 35 |  |  |
Net operating and capital loss carry-forwards |  | 10 | 19 |  | 10 | 19 |  |  |
Tax credit carry-forwards |  | 14 | 15 |  | 14 | 15 |  |  |
Other |  | 9 | 3 |  | 9 | 3 |  |  |
Aggregate deferred income tax assets |  | 172 | 183 |  | 172 | 183 |  |  |
Valuation allowance |  | 19 | 21 |  | 19 | 21 |  |  |
Net deferred income tax liability |  | 41 | 50 |  | 41 | 50 |  |  |
Accrued interest and penalties on uncertain tax positions |  | 4 | 3 |  | 4 | 3 |  |  |
Unrecognized tax benefits, if recognized, would affect the effective tax rate |  | 7 | 7 |  | 7 | 7 |  |  |
Reconciliation of the beginning and ending amount of unrecognized tax benefits |  |  |  |  |  |  |  |  |
Balance at the beginning of the year |  |  |  |  | 7 | 7 |  |  |
Additions for uncertain tax positions of prior years |  |  |  |  | 1 |  |  |  |
Decreases for uncertain tax positions of prior years |  |  |  |  | (2) |  |  |  |
Additions for uncertain tax positions of current year |  |  |  |  | 1 |  |  |  |
Balance at the end of the year |  | 7 | 7 |  | 7 | 7 | 7 |  |
Undistributed earnings from foreign operations |  | 977 |  |  | $ 977 |  |  |  |
Net operating loss carry-forwards and tax credit carry-forwards |  |  |  |  |  |  |  |  |
Period of low income housing tax credits on investments in various limited partnerships |  |  |  |  | 10 years |  |  |  |
Investments in limited partnerships |  | 10 | 12 |  | $ 10 | 12 |  |  |
Tax benefit arising due to difference between current and deferred taxes |  |  |  |  |  |  |  | $ 13 | $ 11
Tax benefit arising due to difference between current and deferred taxes per common share |  |  |  |  |  |  |  | $ 10.92 | $ 9.68
One-time tax benefit on enactment of law |  |  |  | $ 8 |  |  |  |  |
One-time Federal blender's credits recognized as revenue |  | $ 17 | $ 15 | $ 11 |  |  |  |  |
One-time Federal blender's credits recognized as revenue per common share |  | $ 14.88 |  |  |  |  |  |  |
Other commitments |  |  |  |  |  |  |  |  |
Contribution to long-term investment |  |  |  |  | 28 | $ 3 | $ 4 |  |
Refined coal processing plant |  |  |  |  |  |  |  |  |
Other commitments |  |  |  |  |  |  |  |  |
Contribution to long-term investment | $ 9 |  |  |  |  |  |  |  |
Commitment to contribute to joint venture | 53 |  |  |  |  |  |  |  |
Refined coal processing plant | Minimum |  |  |  |  |  |  |  |  |
Other commitments |  |  |  |  |  |  |  |  |
Expected contribution in next fiscal year | 4 |  |  |  |  |  |  |  |
Refined coal processing plant | Maximum |  |  |  |  |  |  |  |  |
Other commitments |  |  |  |  |  |  |  |  |
Expected contribution in next fiscal year | $ 9 |  |  |  |  |  |  |  |
Foreign |  |  |  |  |  |  |  |  |
Net operating loss carry-forwards and tax credit carry-forwards |  |  |  |  |  |  |  |  |
Net operating loss carry-forwards (NOLs) |  | $ 22 |  |  | 22 |  |  |  |
State |  |  |  |  |  |  |  |  |
Net operating loss carry-forwards and tax credit carry-forwards |  |  |  |  |  |  |  |  |
Tax credit carry-forwards |  | $ 21 |  |  | $ 21 |  |  |  |

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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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