XML 43 R31.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Accumulated Other Comprehensive Loss (AOCL) (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2024
Accumulated Other Comprehensive Income [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
($ in millions) | Foreign Currency Translation Adjustments (a) |  | Pension and Other Postretirement Benefit Adjustments, net of tax (b) |  | Unrealized Gain on Derivatives, net of tax |  | Accumulated Other Comprehensive Loss
January 1, 2023 | ($2,254) |  |  | ($557) |  |  | $1 |  |  | ($2,810) |
Current year deferrals to AOCL | 262 |  |  | (9) |  |  | — |  |  | 253 |
Reclassifications from AOCL to net income | 1 |  |  | 148 |  |  | — |  |  | 149 |
March 31, 2023 | ($1,991) |  |  | ($418) |  |  | $1 |  |  | ($2,408) |
January 1, 2024 | ($1,746) |  |  | ($494) |  |  | $1 |  |  | ($2,239) |
Current year deferrals to AOCL | (12) |  |  | (3) |  |  | — |  |  | (15) |
Reclassifications from AOCL to net income | — |  |  | 3 |  |  | — |  |  | 3 |
March 31, 2024 | ($1,758) |  |  | ($494) |  |  | $1 |  |  | ($2,251) |
(a)The tax cost related to unrealized foreign currency translation adjustments on net investment hedges was $68 million and $64 million as of March 31, 2024 and 2023, respectively. (b)The tax benefit related to the adjustment for pension and other postretirement benefits was $1 million and $46 million for the three months ended March 31, 2024 and 2023, respectively. Reclassifications from AOCL are included in the computation of net periodic benefit cost (See Note 9, "Pensions and Other Postretirement Benefits").

X
- Definition Accumulated Other Comprehensive Income [Abstract] + References No definition available. + Details
Name: | ppg_AccumulatedOtherComprehensiveIncomeAbstract
Namespace Prefix: | ppg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481674/830-30-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481694/830-30-45-20 + Details
Name: | us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration