XML 64 R41.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Summary of Significant Accounting Policies - Restricted Stock Unit Valuation (Detail) - Market Condition Based Restricted Stock Unit Grants | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Schedule of fair value option award of weighted average assumptions |  |  |
Expected volatility (company) | 51.30% | 40.00% | 38.30%
Expected volatility (peer group median) | 42.90% | 40.00% | 33.20%
Correlation between the company and peer group median | 0.6 | 0.5 | 0.5
Expected dividend yield | 0.00% | 0.00% | 0.00%
Risk-free rate | 0.30% | 0.90% | 2.60%

X
- Definition The correlation coefficient between the company and the peer group median. + References No definition available. + Details
Name: | bldr_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsCorrelationRate
Namespace Prefix: | bldr_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition The estimated measure of the percentage by which the share prices of the constituents of the peer group is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References No definition available. + Details
Name: | bldr_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRatePeerGroupMedian
Namespace Prefix: | bldr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) over the vesting period. + References No definition available. + Details
Name: | bldr_ShareBasedCompensationArrangementRestrictedStockUnitAwardFairValueAssumptionsExpectedDividendRate
Namespace Prefix: | bldr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The risk-free interest rate assumption that is used in valuing restricted stock units. + References No definition available. + Details
Name: | bldr_ShareBasedCompensationArrangementRestrictedStockUnitAwardFairValueAssumptionsRiskFreeInterestRate
Namespace Prefix: | bldr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=bldr_MarketConditionBasedRestrictedStockUnitGrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |