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Retirement and Benefit Plans Level 4 Defined Contribution Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Contribution Plans [Line Items]
Defined contribution plan employer matching contribution, percent	4.00%
Defined contribution plan, additional discretionary contribution	1.00%
Defined contribution plan matching contribution expense	$ 14.3	$ 7.7	$ 6.7
Minimum [Member]
Defined Contribution Plans [Line Items]
Defined contribution additional performance target contribution	2.00%
Maximum [Member]
Defined Contribution Plans [Line Items]
Defined contribution additional performance target contribution	4.00%

X

- Definition

Defined contribution additional discretionary contribution for meeting the second, higher performance target

+ References

No definition available.

+ Details

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Namespace Prefix:	bcc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Defined contribution additional performance target contribution amount that will range from 2% to 4% of the employee's eligible compensation, depending on the employee's years of service.

+ References

No definition available.

+ Details

Name:	bcc_DefinedContributionAdditionalPerformanceTargetContribution
Namespace Prefix:	bcc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	bcc_DefinedContributionPlansLineItems
Namespace Prefix:	bcc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

+ Details

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration