| 
           Treasury and Preferred Stock (Details) (USD $) 
        In Millions, except Share data, unless otherwise specified  | 
        1 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
| 
           Oct. 31, 2014 
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           Dec. 31, 2014 
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           Dec. 31, 2013 
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           Dec. 31, 2012 
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      |
| Equity [Abstract] | ||||
| Stock Repurchase Program, Authorized Amount | $ 200us-gaap_StockRepurchaseProgramAuthorizedAmount1 | |||
| Stock Repurchase Program, Period in Force | 2 years | |||
| Treasury stock activity [Roll Forward] | ||||
| Balance at January 1 | 10,129,000us-gaap_TreasuryStockShares | 12,907,000us-gaap_TreasuryStockShares | 13,434,000us-gaap_TreasuryStockShares | |
| Compensation plans and other | (697,000)us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation | (2,778,000)us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation | (527,000)us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation | |
| Share repurchases | 412,000us-gaap_TreasuryStockSharesAcquired | 0us-gaap_TreasuryStockSharesAcquired | 0us-gaap_TreasuryStockSharesAcquired | |
| Balance at December 31 | 9,844,000us-gaap_TreasuryStockShares | 10,129,000us-gaap_TreasuryStockShares | 12,907,000us-gaap_TreasuryStockShares | |
| Preferred shares outstanding (in shares) | 0us-gaap_PreferredStockSharesOutstanding | 0us-gaap_PreferredStockSharesOutstanding | 0us-gaap_PreferredStockSharesOutstanding | |
| Preferred shares authorized (in shares) | 12,500,000us-gaap_PreferredStockSharesAuthorized | 12,500,000us-gaap_PreferredStockSharesAuthorized | 12,500,000us-gaap_PreferredStockSharesAuthorized | |
| Preferred shares par value (in dollars per share) | $ 0.75us-gaap_PreferredStockParOrStatedValuePerShare | $ 0.75us-gaap_PreferredStockParOrStatedValuePerShare | $ 0.75us-gaap_PreferredStockParOrStatedValuePerShare | |
| Percentage increase in share price | 11.00%bc_Percentageincreaseinshareprice | 58.00%bc_Percentageincreaseinshareprice | ||
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- Definition 
          Percentage increase in share price for the fiscal year. No definition available. 
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- Details 
          
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- Details 
          
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- Definition 
          Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Number of shares (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), net of any shares forfeited. Shares 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of stock repurchase plan authorized. No definition available. 
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- Definition 
          Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available. 
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- Definition 
          Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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