XML 68 R57.htm IDEA: XBRL DOCUMENT
v3.24.2

Equity - Share Repurchase Program and Share Repurchase Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Number of shares repurchased (in shares) | 778,575 | 423,833 | 1,268,309 | 751,513
Cash paid for repurchased shares | $ 339,593 | $ 131,522 | $ 564,717 | $ 238,372
Treasury stock, average price paid per share (in dollars per share) | $ 442.60 | $ 312.95 | $ 449.19 | $ 321.34
Open Market Purchases, Excluded |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Cash paid for repurchased shares | $ 5,000 | $ 3,100 | $ 5,000 | $ 3,100
Open Market Purchases |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Cash paid for repurchased shares |  | $ 2,000 |  |

X
- Definition Treasury Stock Average Price Paid Per Share. + References No definition available. + Details
Name: | it_TreasuryStockAveragePricePaidPerShare
Namespace Prefix: | it_
Data Type: | dtr-types1:perShareItemType
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_EquityClassOfTreasuryStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_PaymentsForRepurchaseOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_TreasuryStockSharesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ShareRepurchaseProgramAxis=it_OpenMarketPurchasesExcludedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ShareRepurchaseProgramAxis=it_OpenMarketPurchasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |