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Fair Value of Financial Instruments - Summary of Reconciliation of Fair Value of Contingent Consideration Obligations (Detail) $ in Millions | 6 Months Ended
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Jun. 30, 2022 USD ($) Arrangement
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract] |
Balances at beginning of period | $ 4
Issuances | 0
Balance at end of period | $ 4
Number of open contingent consideration arrangements at the end of period | Arrangement | 3
Maximum potential payout at end of period | $ 5

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- Definition Business combination contingent consideration arrangements maximum potential payout. + References No definition available. + Details
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Namespace Prefix: | apg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents number of such arrangements. + References No definition available. + Details
Name: | apg_BusinessCombinationContingentConsiderationArrangementsNumberOfOpenArrangements
Namespace Prefix: | apg_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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- Definition Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant