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Supplemental Guarantor Condensed Consolidating Financial Statements (Tables) | 9 Months Ended
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Sep. 30, 2012
Supplemental Guarantor Condensed Consolidating Financial Statements -9.25% Notes [Abstract] |
Supplemental Guarantor Consolidating Income Statement [Table Text Block] |
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) |  |  |  |  |  |  |  |
Three Months Ended September 30, |  |  |  |  |  |  |  |  |  |  |  |
(in millions) |  |  |  |  |  |  |  |  |  |  |  |
|  | Holdings |  | AAM Inc. |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Elims |  | Consolidated
2012 |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |
External |  | $ | — |  |  | $ | 162.2 |  |  | $ | 55.4 |  |  | $ | 485.3 |  |  | $ | — |  |  | $ | 702.9 |
Intercompany |  | — |  |  | 3.5 |  |  | 54.4 |  |  | 10.1 |  |  | (68.0 | ) |  | — |
Total net sales |  | — |  |  | 165.7 |  |  | 109.8 |  |  | 495.4 |  |  | (68.0 | ) |  | 702.9 |
Cost of goods sold |  | — |  |  | 164.3 |  |  | 97.7 |  |  | 418.2 |  |  | (68.0 | ) |  | 612.2 |
Gross profit |  | — |  |  | 1.4 |  |  | 12.1 |  |  | 77.2 |  |  | — |  |  | 90.7 |
Selling, general and administrative expenses |  | — |  |  | 50.0 |  |  | — |  |  | 10.6 |  |  | — |  |  | 60.6 |
Operating income (loss) |  | — |  |  | (48.6 | ) |  | 12.1 |  |  | 66.6 |  |  | — |  |  | 30.1 |
Non-operating income (expense), net |  | — |  |  | (35.7 | ) |  | 0.1 |  |  | (1.8 | ) |  | — |  |  | (37.4 | )
Income (loss) before income taxes |  | — |  |  | (84.3 | ) |  | 12.2 |  |  | 64.8 |  |  | — |  |  | (7.3 | )
Income tax expense |  | — |  |  | 0.1 |  |  | — |  |  | 0.8 |  |  | — |  |  | 0.9 |
Earnings (loss) from equity in subsidiaries |  | (8.1 | ) |  | 34.5 |  |  | (14.7 | ) |  | — |  |  | (11.7 | ) |  | — |
Net income (loss) before royalties and dividends |  | (8.1 | ) |  | (49.9 | ) |  | (2.5 | ) |  | 64.0 |  |  | (11.7 | ) |  | (8.2 | )
Royalties and dividends |  | — |  |  | 41.8 |  |  | — |  |  | (41.8 | ) |  | — |  |  | — |
Net income (loss) after royalties and dividends |  | (8.1 | ) |  | (8.1 | ) |  | (2.5 | ) |  | 22.2 |  |  | (11.7 | ) |  | (8.2 | )
Net loss attributable to noncontrolling interests |  | — |  |  | — |  |  | — |  |  | 0.1 |  |  | — |  |  | 0.1 |
Net income (loss) attributable to AAM |  | $ | (8.1 | ) |  | $ | (8.1 | ) |  | $ | (2.5 | ) |  | $ | 22.3 |  |  | $ | (11.7 | ) |  | $ | (8.1 | )
Other comprehensive income (loss) |  | (95.6 | ) |  | (95.6 | ) |  | 4.1 |  |  | 5.8 |  |  | 85.7 |  |  | (95.6 | )
Comprehensive income (loss) attributable to AAM |  | $ | (103.7 | ) |  | $ | (103.7 | ) |  | $ | 1.6 |  |  | $ | 28.1 |  |  | $ | 74.0 |  |  | $ | (103.7 | )
|  | Holdings |  | AAM Inc. |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Elims |  | Consolidated
2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
External |  | $ | — |  |  | $ | 186.8 |  |  | $ | 48.2 |  |  | $ | 412.6 |  |  | $ | — |  |  | $ | 647.6 |
Intercompany |  | — |  |  | 7.0 |  |  | 48.2 |  |  | 3.7 |  |  | (58.9 | ) |  | — |
Total net sales |  | — |  |  | 193.8 |  |  | 96.4 |  |  | 416.3 |  |  | (58.9 | ) |  | 647.6 |
Cost of goods sold |  | — |  |  | 182.4 |  |  | 84.2 |  |  | 336.4 |  |  | (58.9 | ) |  | 544.1 |
Gross profit |  | — |  |  | 11.4 |  |  | 12.2 |  |  | 79.9 |  |  | — |  |  | 103.5 |
Selling, general and administrative expenses |  | — |  |  | 48.0 |  |  | — |  |  | 11.0 |  |  | — |  |  | 59.0 |
Operating income (loss) |  | — |  |  | (36.6 | ) |  | 12.2 |  |  | 68.9 |  |  | — |  |  | 44.5 |
Non-operating income (expense), net |  | — |  |  | (21.1 | ) |  | 0.4 |  |  | 1.1 |  |  | — |  |  | (19.6 | )
Income (loss) before income taxes |  | — |  |  | (57.7 | ) |  | 12.6 |  |  | 70.0 |  |  | — |  |  | 24.9 |
Income tax expense (benefit) |  | — |  |  | (0.1 | ) |  | — |  |  | 2.4 |  |  | — |  |  | 2.3 |
Earnings (loss) from equity in subsidiaries |  | 24.8 |  |  | 33.3 |  |  | (13.1 | ) |  | — |  |  | (45.0 | ) |  | — |
Net income (loss) before royalties and dividends |  | 24.8 |  |  | (24.3 | ) |  | (0.5 | ) |  | 67.6 |  |  | (45.0 | ) |  | 22.6 |
Royalties and dividends |  | — |  |  | 49.1 |  |  | — |  |  | (49.1 | ) |  | — |  |  | — |
Net income (loss) after royalties and dividends |  | 24.8 |  |  | 24.8 |  |  | (0.5 | ) |  | 18.5 |  |  | (45.0 | ) |  | 22.6 |
Net loss attributable to noncontrolling interests |  | — |  |  | — |  |  | — |  |  | 2.2 |  |  | — |  |  | 2.2 |
Net income (loss) attributable to AAM |  | $ | 24.8 |  |  | $ | 24.8 |  |  | $ | (0.5 | ) |  | $ | 20.7 |  |  | $ | (45.0 | ) |  | $ | 24.8 |
Other comprehensive loss |  | (38.8 | ) |  | (38.8 | ) |  | (28.7 | ) |  | (37.0 | ) |  | 104.5 |  |  | (38.8 | )
Foreign currency translation adjustments attributable to noncontrolling interests |  | 0.5 |  |  | 0.5 |  |  | — |  |  | 0.5 |  |  | (1.0 | ) |  | 0.5 |
Comprehensive loss attributable to AAM |  | $ | (13.5 | ) |  | $ | (13.5 | ) |  | $ | (29.2 | ) |  | $ | (15.8 | ) |  | $ | 58.5 |  |  | $ | (13.5 | )
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) |  |  |  |  |  |  |  |
Nine Months Ended September 30, |  |  |  |  |  |  |  |  |  |  |  |
(in millions) |  |  |  |  |  |  |  |  |  |  |  |
|  | Holdings |  | AAM Inc. |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Elims |  | Consolidated
2012 |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |
External |  | $ | — |  |  | $ | 542.6 |  |  | $ | 164.7 |  |  | $ | 1,486.9 |  |  | $ | — |  |  | $ | 2,194.2 |
Intercompany |  | — |  |  | 14.9 |  |  | 174.5 |  |  | 22.3 |  |  | (211.7 | ) |  | — |
Total net sales |  | — |  |  | 557.5 |  |  | 339.2 |  |  | 1,509.2 |  |  | (211.7 | ) |  | 2,194.2 |
Cost of goods sold |  | — |  |  | 544.7 |  |  | 298.3 |  |  | 1,247.2 |  |  | (211.7 | ) |  | 1,878.5 |
Gross profit |  | — |  |  | 12.8 |  |  | 40.9 |  |  | 262.0 |  |  | — |  |  | 315.7 |
Selling, general and administrative expenses |  | — |  |  | 148.2 |  |  | — |  |  | 29.7 |  |  | — |  |  | 177.9 |
Operating income (loss) |  | — |  |  | (135.4 | ) |  | 40.9 |  |  | 232.3 |  |  | — |  |  | 137.8 |
Non-operating income (expense), net |  | — |  |  | (84.5 | ) |  | 1.3 |  |  | (3.0 | ) |  | — |  |  | (86.2 | )
Income (loss) before income taxes |  | — |  |  | (219.9 | ) |  | 42.2 |  |  | 229.3 |  |  | — |  |  | 51.6 |
Income tax expense |  | — |  |  | 0.4 |  |  | — |  |  | 4.4 |  |  | — |  |  | 4.8 |
Earnings (loss) from equity in subsidiaries |  | 47.8 |  |  | 133.8 |  |  | (40.9 | ) |  | — |  |  | (140.7 | ) |  | — |
Net income (loss) before royalties and dividends |  | 47.8 |  |  | (86.5 | ) |  | 1.3 |  |  | 224.9 |  |  | (140.7 | ) |  | 46.8 |
Royalties and dividends |  | — |  |  | 134.3 |  |  | — |  |  | (134.3 | ) |  | — |  |  | — |
Net income after royalties and dividends |  | 47.8 |  |  | 47.8 |  |  | 1.3 |  |  | 90.6 |  |  | (140.7 | ) |  | 46.8 |
Net loss attributable to noncontrolling interests |  | — |  |  | — |  |  | — |  |  | 1.0 |  |  | — |  |  | 1.0 |
Net income attributable to AAM |  | $ | 47.8 |  |  | $ | 47.8 |  |  | $ | 1.3 |  |  | $ | 91.6 |  |  | $ | (140.7 | ) |  | $ | 47.8 |
Other comprehensive loss |  | (116.7 | ) |  | (116.7 | ) |  | (7.3 | ) |  | (1.0 | ) |  | 125.0 |  |  | (116.7 | )
Foreign currency translation adjustments attributable to noncontrolling interests |  | (0.2 | ) |  | (0.2 | ) |  | — |  |  | (0.2 | ) |  | 0.4 |  |  | (0.2 | )
Comprehensive income (loss) attributable to AAM |  | $ | (69.1 | ) |  | $ | (69.1 | ) |  | $ | (6.0 | ) |  | $ | 90.4 |  |  | $ | (15.3 | ) |  | $ | (69.1 | )
|  | Holdings |  | AAM Inc. |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Elims |  | Consolidated
2011 |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |
External |  | $ | — |  |  | $ | 601.8 |  |  | $ | 148.3 |  |  | $ | 1,229.3 |  |  | $ | — |  |  | $ | 1,979.4 |
Intercompany |  | — |  |  | 19.3 |  |  | 145.1 |  |  | 8.7 |  |  | (173.1 | ) |  | — |
Total net sales |  | — |  |  | 621.1 |  |  | 293.4 |  |  | 1,238.0 |  |  | (173.1 | ) |  | 1,979.4 |
Cost of goods sold |  | — |  |  | 569.0 |  |  | 253.5 |  |  | 980.6 |  |  | (173.1 | ) |  | 1,630.0 |
Gross profit |  | — |  |  | 52.1 |  |  | 39.9 |  |  | 257.4 |  |  | — |  |  | 349.4 |
Selling, general and administrative expenses |  | — |  |  | 144.0 |  |  | — |  |  | 30.5 |  |  | — |  |  | 174.5 |
Operating income (loss) |  | — |  |  | (91.9 | ) |  | 39.9 |  |  | 226.9 |  |  | — |  |  | 174.9 |
Non-operating income (expense), net |  | — |  |  | (68.1 | ) |  | 0.8 |  |  | 3.7 |  |  | — |  |  | (63.6 | )
Income (loss) before income taxes |  | — |  |  | (160.0 | ) |  | 40.7 |  |  | 230.6 |  |  | — |  |  | 111.3 |
Income tax expense (benefit) |  | — |  |  | (2.1 | ) |  | — |  |  | 6.3 |  |  | — |  |  | 4.2 |
Earnings (loss) from equity in subsidiaries |  | 111.7 |  |  | 121.2 |  |  | (30.4 | ) |  | — |  |  | (202.5 | ) |  | — |
Net income (loss) before royalties and dividends |  | 111.7 |  |  | (36.7 | ) |  | 10.3 |  |  | 224.3 |  |  | (202.5 | ) |  | 107.1 |
Royalties and dividends |  | — |  |  | 148.4 |  |  | — |  |  | (148.4 | ) |  | — |  |  | — |
Net income after royalties and dividends |  | 111.7 |  |  | 111.7 |  |  | 10.3 |  |  | 75.9 |  |  | (202.5 | ) |  | 107.1 |
Net loss attributable to noncontrolling interests |  | — |  |  | — |  |  | — |  |  | 4.6 |  |  | — |  |  | 4.6 |
Net income attributable to AAM |  | $ | 111.7 |  |  | $ | 111.7 |  |  | $ | 10.3 |  |  | $ | 80.5 |  |  | $ | (202.5 | ) |  | $ | 111.7 |
Other comprehensive loss |  | (20.7 | ) |  | (20.7 | ) |  | (16.2 | ) |  | (24.4 | ) |  | 61.3 |  |  | (20.7 | )
Foreign currency translation adjustments attributable to noncontrolling interests |  | (0.3 | ) |  | (0.3 | ) |  | — |  |  | (0.3 | ) |  | 0.6 |  |  | (0.3 | )
Comprehensive income (loss) attributable to AAM |  | $ | 90.7 |  |  | $ | 90.7 |  |  | $ | (5.9 | ) |  | $ | 55.8 |  |  | $ | (140.6 | ) |  | $ | 90.7 |
Supplemental Guarantor Consolidating Balance Sheet [Table Text Block] |
Condensed Consolidating Balance Sheets |  |  |  |  |  |  |  |  |  |
(in millions) |  |  |  |  |  |  |  |  |  |  |  |
|  | Holdings |  | AAM Inc. |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Elims |  | Consolidated
September 30, 2012 |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | — |  |  | $ | 151.8 |  |  | $ | — |  |  | $ | 57.2 |  |  | $ | — |  |  | $ | 209.0 |
Accounts receivable, net |  | — |  |  | 84.9 |  |  | 30.9 |  |  | 349.5 |  |  | — |  |  | 465.3 |
Inventories, net |  | — |  |  | 51.2 |  |  | 33.1 |  |  | 158.0 |  |  | — |  |  | 242.3 |
Other current assets |  | — |  |  | 32.1 |  |  | 1.7 |  |  | 71.7 |  |  | — |  |  | 105.5 |
Total current assets |  | — |  |  | 320.0 |  |  | 65.7 |  |  | 636.4 |  |  | — |  |  | 1,022.1 |
Property, plant and equipment, net |  | — |  |  | 258.4 |  |  | 84.3 |  |  | 664.9 |  |  | — |  |  | 1,007.6 |
Goodwill |  | — |  |  | — |  |  | 147.8 |  |  | 8.5 |  |  | — |  |  | 156.3 |
Other assets and deferred charges |  | — |  |  | 360.8 |  |  | 39.4 |  |  | 88.0 |  |  | — |  |  | 488.2 |
Investment in subsidiaries |  | — |  |  | 1,151.0 |  |  | 4.3 |  |  | — |  |  | (1,155.3 | ) |  | — |
Total assets |  | $ | — |  |  | $ | 2,090.2 |  |  | $ | 341.5 |  |  | $ | 1,397.8 |  |  | $ | (1,155.3 | ) |  | $ | 2,674.2 |
Liabilities and stockholders’ equity (deficit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable |  | $ | — |  |  | $ | 95.9 |  |  | $ | 47.4 |  |  | $ | 286.2 |  |  | $ | — |  |  | $ | 429.5 |
Other current liabilities |  | — |  |  | 128.1 |  |  | 3.8 |  |  | 88.4 |  |  | — |  |  | 220.3 |
Total current liabilities |  | — |  |  | 224.0 |  |  | 51.2 |  |  | 374.6 |  |  | — |  |  | 649.8 |
Intercompany payable (receivable) |  | 326.6 |  |  | (392.4 | ) |  | 275.2 |  |  | (209.4 | ) |  | — |  |  | — |
Long-term debt |  | — |  |  | 1,541.6 |  |  | 5.7 |  |  | 32.6 |  |  | — |  |  | 1,579.9 |
Investment in subsidiaries obligation |  | 171.1 |  |  | — |  |  | — |  |  | — |  |  | (171.1 | ) |  | — |
Other long-term liabilities |  | — |  |  | 888.1 |  |  | 3.6 |  |  | 50.5 |  |  | — |  |  | 942.2 |
Total liabilities |  | 497.7 |  |  | 2,261.3 |  |  | 335.7 |  |  | 248.3 |  |  | (171.1 | ) |  | 3,171.9 |
Total AAM Stockholders’ equity (deficit) |  | (497.7 | ) |  | (171.1 | ) |  | 5.8 |  |  | 1,149.5 |  |  | (984.2 | ) |  | (497.7 | )
Noncontrolling interests in subsidiaries |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total stockholders’ equity (deficit) |  | (497.7 | ) |  | (171.1 | ) |  | 5.8 |  |  | 1,149.5 |  |  | (984.2 | ) |  | (497.7 | )
Total liabilities and stockholders’ equity (deficit) |  | $ | — |  |  | $ | 2,090.2 |  |  | $ | 341.5 |  |  | $ | 1,397.8 |  |  | $ | (1,155.3 | ) |  | $ | 2,674.2 |
|  | Holdings |  | AAM Inc. |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Elims |  | Consolidated
December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | — |  |  | $ | 83.7 |  |  | $ | — |  |  | $ | 85.5 |  |  | $ | — |  |  | $ | 169.2 |
Accounts receivable, net |  | — |  |  | 77.1 |  |  | 23.3 |  |  | 232.9 |  |  | — |  |  | 333.3 |
Inventories, net |  | — |  |  | 48.2 |  |  | 35.3 |  |  | 93.7 |  |  | — |  |  | 177.2 |
Other current assets |  | — |  |  | 26.5 |  |  | 1.7 |  |  | 55.2 |  |  | — |  |  | 83.4 |
Total current assets |  | — |  |  | 235.5 |  |  | 60.3 |  |  | 467.3 |  |  | — |  |  | 763.1 |
Property, plant and equipment, net |  | — |  |  | 260.4 |  |  | 84.6 |  |  | 626.2 |  |  | — |  |  | 971.2 |
Goodwill |  | — |  |  | — |  |  | 147.8 |  |  | 8.1 |  |  | — |  |  | 155.9 |
Other assets and deferred charges |  | — |  |  | 327.2 |  |  | 35.8 |  |  | 75.5 |  |  | — |  |  | 438.5 |
Investment in subsidiaries |  | — |  |  | 1,015.2 |  |  | 26.6 |  |  | — |  |  | (1,041.8 | ) |  | — |
Total assets |  | $ | — |  |  | $ | 1,838.3 |  |  | $ | 355.1 |  |  | $ | 1,177.1 |  |  | $ | (1,041.8 | ) |  | $ | 2,328.7 |
Liabilities and stockholders’ equity (deficit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable |  | $ | — |  |  | $ | 96.3 |  |  | $ | 41.0 |  |  | $ | 199.8 |  |  | $ | — |  |  | $ | 337.1 |
Other current liabilities |  | — |  |  | 155.1 |  |  | 3.0 |  |  | 80.9 |  |  | — |  |  | 239.0 |
Total current liabilities |  | — |  |  | 251.4 |  |  | 44.0 |  |  | 280.7 |  |  | — |  |  | 576.1 |
Intercompany payable (receivable) |  | 320.7 |  |  | (368.6 | ) |  | 289.0 |  |  | (241.1 | ) |  | — |  |  | — |
Long-term debt |  | — |  |  | 1,128.9 |  |  | 5.9 |  |  | 45.4 |  |  | — |  |  | 1,180.2 |
Investment in subsidiaries obligation |  | 104.8 |  |  | — |  |  | — |  |  | — |  |  | (104.8 | ) |  | — |
Other long-term liabilities |  | — |  |  | 931.4 |  |  | 3.6 |  |  | 57.0 |  |  | — |  |  | 992.0 |
Total liabilities |  | 425.5 |  |  | 1,943.1 |  |  | 342.5 |  |  | 142.0 |  |  | (104.8 | ) |  | 2,748.3 |
Total AAM Stockholders’ equity (deficit) |  | (425.5 | ) |  | (104.8 | ) |  | 12.6 |  |  | 1,029.2 |  |  | (937.0 | ) |  | (425.5 | )
Noncontrolling interests in subsidiaries |  | — |  |  | — |  |  | — |  |  | 5.9 |  |  | — |  |  | 5.9 |
Total stockholders’ equity (deficit) |  | (425.5 | ) |  | (104.8 | ) |  | 12.6 |  |  | 1,035.1 |  |  | (937.0 | ) |  | (419.6 | )
Total liabilities and stockholders’ equity (deficit) |  | $ | — |  |  | $ | 1,838.3 |  |  | $ | 355.1 |  |  | $ | 1,177.1 |  |  | $ | (1,041.8 | ) |  | $ | 2,328.7 |
Supplemental Guarantor Consolidating Statement of Cash Flows [Table Text Block] |
Condensed Consolidating Statements of Cash Flows |  |  |  |  |  |  |  |
Nine Months Ended September 30, |  |  |  |  |  |  |  |  |  |  |  |
(in millions) |  |  |  |  |  |  |  |  |  |  |  |
|  | Holdings |  | AAM Inc. |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Elims |  | Consolidated
2012 |  |  |  |  |  |  |  |  |  |  |  |
Net cash provided by (used in) operating activities |  | $ | — |  |  | $ | (276.8 | ) |  | $ | 42.3 |  |  | $ | 37.9 |  |  | $ | — |  |  | $ | (196.6 | )
Investing activities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases of property, plant and equipment |  | — |  |  | (36.2 | ) |  | (6.2 | ) |  | (101.3 | ) |  | — |  |  | (143.7 | )
Proceeds from sale of equipment |  | — |  |  | 0.5 |  |  | — |  |  | 1.7 |  |  | — |  |  | 2.2 |
Net cash used in investing activities |  | — |  |  | (35.7 | ) |  | (6.2 | ) |  | (99.6 | ) |  | — |  |  | (141.5 | )
Financing activities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net debt activity |  | — |  |  | 409.6 |  |  | (0.2 | ) |  | (12.4 | ) |  | — |  |  | 397.0 |
Intercompany activity |  | 5.9 |  |  | (19.0 | ) |  | (35.9 | ) |  | 49.0 |  |  | — |  |  | — |
Debt issuance costs |  | — |  |  | (10.1 | ) |  | — |  |  | — |  |  | — |  |  | (10.1 | )
Purchase of noncontrolling interest |  | — |  |  | — |  |  | — |  |  | (4.0 | ) |  | — |  |  | (4.0 | )
Employee stock option exercises |  | — |  |  | 0.1 |  |  | — |  |  | — |  |  | — |  |  | 0.1 |
Purchase of treasury stock |  | (5.9 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | (5.9 | )
Net cash provided by (used in) financing activities |  | — |  |  | 380.6 |  |  | (36.1 | ) |  | 32.6 |  |  | — |  |  | 377.1 |
Effect of exchange rate changes on cash |  | — |  |  | — |  |  | — |  |  | 0.8 |  |  | — |  |  | 0.8 |
Net increase (decrease) in cash and cash equivalents |  | — |  |  | 68.1 |  |  | — |  |  | (28.3 | ) |  | — |  |  | 39.8 |
Cash and cash equivalents at beginning of period |  | — |  |  | 83.7 |  |  | — |  |  | 85.5 |  |  | — |  |  | 169.2 |
Cash and cash equivalents at end of period |  | $ | — |  |  | $ | 151.8 |  |  | $ | — |  |  | $ | 57.2 |  |  | $ | — |  |  | $ | 209.0 |
|  | Holdings |  | AAM Inc. |  | Guarantor Subsidiaries |  | Non-Guarantor Subsidiaries |  | Elims |  | Consolidated
2011 |  |  |  |  |  |  |  |  |  |  |  |
Net cash provided by (used in) operating activities |  | $ | — |  |  | $ | (106.1 | ) |  | $ | 35.5 |  |  | $ | 5.2 |  |  | $ | — |  |  | $ | (65.4 | )
Investing activities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases of property, plant and equipment |  | — |  |  | (25.9 | ) |  | (3.5 | ) |  | (81.6 | ) |  | — |  |  | (111.0 | )
Proceeds from sale of equipment |  | — |  |  | 1.5 |  |  | 0.1 |  |  | 6.3 |  |  | — |  |  | 7.9 |
Net cash used in investing activities |  | — |  |  | (24.4 | ) |  | (3.4 | ) |  | (75.3 | ) |  | — |  |  | (103.1 | )
Financing activities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net debt activity |  | (42.9 | ) |  | 70.0 |  |  | (0.2 | ) |  | 13.7 |  |  | — |  |  | 40.6 |
Intercompany activity |  | 43.0 |  |  | 34.9 |  |  | (31.9 | ) |  | (46.0 | ) |  | — |  |  | — |
Debt issuance costs |  | — |  |  | (5.7 | ) |  | — |  |  | — |  |  | — |  |  | (5.7 | )
Employee stock option exercises |  | — |  |  | 4.6 |  |  | — |  |  | — |  |  | — |  |  | 4.6 |
Purchase of treasury stock |  | (0.1 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | (0.1 | )
Net cash provided by (used in) financing activities |  | — |  |  | 103.8 |  |  | (32.1 | ) |  | (32.3 | ) |  | — |  |  | 39.4 |
Effect of exchange rate changes on cash |  | — |  |  | — |  |  | — |  |  | (1.1 | ) |  | — |  |  | (1.1 | )
Net decrease in cash and cash equivalents |  | — |  |  | (26.7 | ) |  | — |  |  | (103.5 | ) |  | — |  |  | (130.2 | )
Cash and cash equivalents at beginning of period |  | — |  |  | 67.6 |  |  | — |  |  | 177.0 |  |  | — |  |  | 244.6 |
Cash and cash equivalents at end of period |  | $ | — |  |  | $ | 40.9 |  |  | $ | — |  |  | $ | 73.5 |  |  | $ | — |  |  | $ | 114.4 |

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