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Condensed Consolidating Financial Statements (Details 3) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Operating activities: |  |  |  |  |  |  |  |  |  |  |
Net income | $ 80.8 | $ 99.4 | $ 110.2 | $ 117.9 | $ 69.1 | $ 86.3 | $ 100.2 | $ 93.6 | $ 408.3 | $ 349.2 | $ 197.9
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | (2.2) | (2.2) | (0.7)
Other operating activities, net |  |  |  |  |  |  |  |  | 195.8 | (112.2) | 16.9
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 601.9 | 234.8 | 214.1
Investing activities: |  |  |  |  |  |  |  |  |  |  |
Purchases of property, plant and equipment |  |  |  |  |  |  |  |  | (214.0) | (156.4) | (111.4)
Acquisitions of metals service centers, net of cash acquired |  |  |  |  |  |  |  |  | (166.9) | (313.3) | (100.3)
Other investing activities, net |  |  |  |  |  |  |  |  | (0.8) | (4.9) | 49.9
Net cash used in investing activities |  |  |  |  |  |  |  |  | (381.7) | (474.6) | (161.8)
Financing activities: |  |  |  |  |  |  |  |  |  |  |
Net short-term debt (repayments) borrowings |  |  |  |  |  |  |  |  | (63.2) | (104.7) | 3.2
Proceeds from long-term debt borrowings |  |  |  |  |  |  |  |  | 641.0 | 995.0 | 539.0
Principal payments on long-term debt |  |  |  |  |  |  |  |  | (763.0) | (606.6) | (560.6)
Dividends paid |  |  |  |  |  |  |  |  | (60.2) | (35.9) | (29.7)
Other financing activities, net |  |  |  |  |  |  |  |  | 37.8 | (0.2) | 23.6
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  | (207.6) | 247.6 | (24.5)
Effect of exchange rate changes on cash and cash equivalents |  |  |  |  |  |  |  |  | 0.4 | 3.9 | 2.1
Increase in cash and cash equivalents |  |  |  |  |  |  |  |  | 13.0 | 11.7 | 29.9
Cash and cash equivalents at beginning of year |  |  |  | 84.6 |  |  |  | 72.9 | 84.6 | 72.9 | 43.0
Cash and cash equivalents at end of year | 97.6 |  |  |  | 84.6 |  |  |  | 97.6 | 84.6 | 72.9
Parent |  |  |  |  |  |  |  |  |  |  |
Operating activities: |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 403.5 | 343.8 | 194.4
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | (379.2) | (204.5) | (144.3)
Other operating activities, net |  |  |  |  |  |  |  |  | (1.0) | (48.1) | 173.1
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 23.3 | 91.2 | 223.2
Investing activities: |  |  |  |  |  |  |  |  |  |  |
Purchases of property, plant and equipment |  |  |  |  |  |  |  |  | (16.0) | (15.0) | (10.7)
Acquisitions of metals service centers, net of cash acquired |  |  |  |  |  |  |  |  | (117.5) | (166.2) | (100.3)
Net advances from subsidiaries |  |  |  |  |  |  |  |  | 260.2 | (229.9) | (99.1)
Other investing activities, net |  |  |  |  |  |  |  |  | 1.8 | (36.8) | (5.0)
Net cash used in investing activities |  |  |  |  |  |  |  |  | 128.5 | (447.9) | (215.1)
Financing activities: |  |  |  |  |  |  |  |  |  |  |
Proceeds from long-term debt borrowings |  |  |  |  |  |  |  |  | 641.0 | 995.0 | 539.0
Principal payments on long-term debt |  |  |  |  |  |  |  |  | (761.3) | (605.2) | (537.3)
Dividends paid |  |  |  |  |  |  |  |  | (60.2) | (35.9) | (29.7)
Other financing activities, net |  |  |  |  |  |  |  |  | 41.7 | 3.5 | 25.3
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  | (138.8) | 357.4 | (2.7)
Increase in cash and cash equivalents |  |  |  |  |  |  |  |  | 13.0 | 0.7 | 5.4
Cash and cash equivalents at beginning of year |  |  |  | 15.1 |  |  |  | 14.4 | 15.1 | 14.4 | 9.0
Cash and cash equivalents at end of year | 28.1 |  |  |  | 15.1 |  |  |  | 28.1 | 15.1 | 14.4
Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Operating activities: |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 357.9 | 184.8 | 135.7
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | (31.1) | (34.3) | (11.4)
Other operating activities, net |  |  |  |  |  |  |  |  | 186.1 | (37.6) | (148.8)
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 512.9 | 112.9 | (24.5)
Investing activities: |  |  |  |  |  |  |  |  |  |  |
Purchases of property, plant and equipment |  |  |  |  |  |  |  |  | (171.1) | (133.2) | (93.8)
Acquisitions of metals service centers, net of cash acquired |  |  |  |  |  |  |  |  | (49.4) |  |
Other investing activities, net |  |  |  |  |  |  |  |  | (2.7) | (8.9) | 49.8
Net cash used in investing activities |  |  |  |  |  |  |  |  | (223.2) | (142.1) | (44.0)
Financing activities: |  |  |  |  |  |  |  |  |  |  |
Net short-term debt (repayments) borrowings |  |  |  |  |  |  |  |  | (59.4) | (74.9) |
Principal payments on long-term debt |  |  |  |  |  |  |  |  | (1.7) | (1.4) | (23.3)
Net intercompany repayments |  |  |  |  |  |  |  |  | (223.2) | 112.0 | 94.7
Other financing activities, net |  |  |  |  |  |  |  |  | (3.1) | (3.7) | (1.8)
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  | (287.4) | 32.0 | 69.6
Increase in cash and cash equivalents |  |  |  |  |  |  |  |  | 2.3 | 2.8 | 1.1
Cash and cash equivalents at beginning of year |  |  |  | 10.8 |  |  |  | 8.0 | 10.8 | 8.0 | 6.9
Cash and cash equivalents at end of year | 13.1 |  |  |  | 10.8 |  |  |  | 13.1 | 10.8 | 8.0
Non-Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Operating activities: |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 55.0 | 57.2 | 22.8
Other operating activities, net |  |  |  |  |  |  |  |  | 10.7 | (26.5) | (7.4)
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 65.7 | 30.7 | 15.4
Investing activities: |  |  |  |  |  |  |  |  |  |  |
Purchases of property, plant and equipment |  |  |  |  |  |  |  |  | (26.9) | (8.2) | (6.9)
Acquisitions of metals service centers, net of cash acquired |  |  |  |  |  |  |  |  |  | (147.1) |
Other investing activities, net |  |  |  |  |  |  |  |  | 0.1 | 0.1 | 0.1
Net cash used in investing activities |  |  |  |  |  |  |  |  | (26.8) | (155.2) | (6.8)
Financing activities: |  |  |  |  |  |  |  |  |  |  |
Net short-term debt (repayments) borrowings |  |  |  |  |  |  |  |  | (3.8) | (29.8) | 3.2
Net intercompany repayments |  |  |  |  |  |  |  |  | (37.0) | 117.9 | 4.4
Other financing activities, net |  |  |  |  |  |  |  |  | (0.8) | 40.7 | 5.1
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  | (41.6) | 128.8 | 12.7
Effect of exchange rate changes on cash and cash equivalents |  |  |  |  |  |  |  |  | 0.4 | 3.9 | 2.1
Increase in cash and cash equivalents |  |  |  |  |  |  |  |  | (2.3) | 8.2 | 23.4
Cash and cash equivalents at beginning of year |  |  |  | 58.7 |  |  |  | 50.5 | 58.7 | 50.5 | 27.1
Cash and cash equivalents at end of year | 56.4 |  |  |  | 58.7 |  |  |  | 56.4 | 58.7 | 50.5
Eliminations |  |  |  |  |  |  |  |  |  |  |
Operating activities: |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | (408.1) | (236.6) | (155.0)
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 408.1 | 236.6 | 155.0
Investing activities: |  |  |  |  |  |  |  |  |  |  |
Net advances from subsidiaries |  |  |  |  |  |  |  |  | (260.2) | 229.9 | 99.1
Other investing activities, net |  |  |  |  |  |  |  |  |  | 40.7 | 5.0
Net cash used in investing activities |  |  |  |  |  |  |  |  | (260.2) | 270.6 | 104.1
Financing activities: |  |  |  |  |  |  |  |  |  |  |
Net intercompany repayments |  |  |  |  |  |  |  |  | 260.2 | (229.9) | (99.1)
Other financing activities, net |  |  |  |  |  |  |  |  |  | (40.7) | (5.0)
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  | $ 260.2 | $ (270.6) | $ (104.1)

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- Definition The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3095-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3098-108585 + Details
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- Definition The cash outflow from the distribution of an entity's earnings in the form of dividends to common shareholders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a -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 -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15, 17 -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 -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph c -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 -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph b -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 -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -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 -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3098-108585 + Details
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