XML 62 R48.htm IDEA: XBRL DOCUMENT v3.10.0.1

Summary of Significant Accounting Policies - Recently Issued Accounting Pronouncements (Details)	Jan. 01, 2019
Scenario Forecast Adjustment | Accounting Standards Update 2016-02 | Maximum
Recently Issued Accounting Pronouncements
Percentage increase in total assets as a result of adoption of new lease accounting standard	5.00%

X

- Definition

The percentage increase (decrease) in total assets upon the adoption of new accounting standard.

+ References

No definition available.

+ Details

Name:	bld_TotalAssetsPercentageIncreaseDecreaseUponAdoptionOfNewAccountingStandard
Namespace Prefix:	bld_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementScenarioAxis=bld_ScenarioForecastAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201602Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: