Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Balance Sheet (Details)

v3.10.0.1
Summary of Significant Accounting Policies - Balance Sheet (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Current assets:        
Cash and cash equivalents $ 125.5 $ 59.0 $ 88.2 $ 83.5
Accounts receivable 165.6 197.8    
Inventories 218.2 208.1    
Prepaid expenses and other current assets 8.5 11.7    
Income tax receivable 2.8 3.6    
Total current assets 520.6 480.2    
Property, plant and equipment, net 147.8 142.9    
Goodwill 4.4 4.5    
Intangible assets, net 1.6 2.0    
Deferred income taxes 11.3 16.1    
Other noncurrent assets 5.3 6.5    
Total assets 691.0 652.2    
Current liabilities:        
Current portion of debt 4.6 5.0    
Accounts payable 114.1 117.1    
Accrued liabilities 40.2 36.0    
Accrued interest 0.1 0.2    
Income tax payable   0.5    
Total current liabilities 159.0 158.8    
Noncurrent portion of debt 305.7 309.0    
Other noncurrent liabilities 38.5 37.1    
Total liabilities 503.2 504.9    
Global Brass and Copper Holdings, Inc. stockholders’ equity:        
Common stock 0.2 0.2    
Additional paid-in capital 62.5 54.5    
Retained earnings 148.8 97.3    
Treasury Stock, Value (22.6) (6.6)    
Accumulated other comprehensive loss (6.1) (2.9)    
Total Global Brass and Copper Holdings, Inc. stockholders’ equity 182.8 142.5    
Noncontrolling interest 5.0 4.8    
Total equity 187.8 147.3 95.2 60.7
Total liabilities and equity 691.0 652.2    
Accounts receivable, allowance $ 1.3 $ 1.0    
Common stock, shares issued (in shares) 22,541,310 22,133,764    
Treasury stock, shares (in shares) 743,057 226,576    
Previously Reported [Member]        
Current assets:        
Cash and cash equivalents   $ 59.0 88.2 83.5
Accounts receivable   197.9    
Inventories   208.1    
Prepaid expenses and other current assets   33.3    
Income tax receivable   3.6    
Total current assets   501.9    
Property, plant and equipment, net   142.9    
Goodwill   4.5    
Intangible assets, net   2.0    
Deferred income taxes   16.1    
Other noncurrent assets   6.5    
Total assets   673.9    
Current liabilities:        
Current portion of debt   5.0    
Accounts payable   117.1    
Accrued liabilities   57.9    
Accrued interest   0.2    
Income tax payable   0.5    
Total current liabilities   180.7    
Noncurrent portion of debt   309.0    
Other noncurrent liabilities   37.1    
Total liabilities   526.8    
Global Brass and Copper Holdings, Inc. stockholders’ equity:        
Common stock   0.2    
Additional paid-in capital   54.5    
Retained earnings   97.1    
Treasury Stock, Value   (6.6)    
Accumulated other comprehensive loss   (2.9)    
Total Global Brass and Copper Holdings, Inc. stockholders’ equity   142.3    
Noncontrolling interest   4.8    
Total equity   147.1   $ 60.7
Total liabilities and equity   673.9    
Accounts receivable, allowance   $ 1.0    
Common stock, shares issued (in shares)   22,133,764    
Treasury stock, shares (in shares)   226,576    
Restatement Adjustment [Member] | Accounting Standards Update 2014-09 [Member]        
Current assets:        
Cash and cash equivalents   $ 0.0 $ 0.0  
Accounts receivable   (0.1)    
Inventories   0.0    
Prepaid expenses and other current assets   (21.6)    
Total current assets   (21.7)    
Property, plant and equipment, net   0.0    
Total assets   (21.7)    
Current liabilities:        
Accrued liabilities   (21.9)    
Total current liabilities   (21.9)    
Total liabilities   (21.9)    
Global Brass and Copper Holdings, Inc. stockholders’ equity:        
Retained earnings   0.2    
Total Global Brass and Copper Holdings, Inc. stockholders’ equity   0.2    
Total equity   0.2    
Total liabilities and equity   (21.7)    
Accounts receivable, allowance   $ 0.0    
Common stock, shares issued (in shares)   0    
Treasury stock, shares (in shares)   0