v3.26.1
Changes in Accumulated Other Comprehensive Loss by Component - Schedule of Changes in Accumulated Other Comprehensive Loss by Component (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Accumulated Other Comprehensive Income Loss [Line Items]          
Balance $ 1,706 $ 2,607 $ 1,905 $ 2,588 $ 2,588
Other comprehensive income (loss) before reclassifications     (47)   110
Amounts reclassified from Accumulated other comprehensive loss     (1)   11
Other comprehensive (loss) income (17) 92 (48) 105 121
Balance 1,633 2,623 1,633 2,623 1,905
Currency Options          
Accumulated Other Comprehensive Income Loss [Line Items]          
Other comprehensive income (loss) before reclassifications         4
Foreign Exchange Forward Contracts          
Accumulated Other Comprehensive Income Loss [Line Items]          
Other comprehensive income (loss) before reclassifications     (14)   22
Foreign Currency Items          
Accumulated Other Comprehensive Income Loss [Line Items]          
Other comprehensive income (loss) before reclassifications     (33)   56
Location, Statement of Other Comprehensive Income, Balance [Axis]: us-gaap:OtherComprehensiveIncomeLossNetOfTax          
Accumulated Other Comprehensive Income Loss [Line Items]          
Other comprehensive income (loss) before reclassifications         28
Net Derivative (Losses) Gains on Cash Flow Hedges          
Accumulated Other Comprehensive Income Loss [Line Items]          
Balance     9 (28) (28)
Other comprehensive income (loss) before reclassifications     (14)   26
Amounts reclassified from Accumulated other comprehensive loss     (6)   11
Other comprehensive (loss) income     (20)   37
Balance (11)   (11)   9
Net Derivative (Losses) Gains on Cash Flow Hedges | Currency Options          
Accumulated Other Comprehensive Income Loss [Line Items]          
Other comprehensive income (loss) before reclassifications         4
Net Derivative (Losses) Gains on Cash Flow Hedges | Foreign Exchange Forward Contracts          
Accumulated Other Comprehensive Income Loss [Line Items]          
Other comprehensive income (loss) before reclassifications     (14)   22
Accumulated Defined Benefit Plans Adjustment | Pension Plans          
Accumulated Other Comprehensive Income Loss [Line Items]          
Balance [1]     11 (17) (17)
Other comprehensive income (loss) before reclassifications [1]         30
Amounts reclassified from Accumulated other comprehensive loss [1]     6   (2)
Other comprehensive (loss) income [1]     6   28
Balance [1] 17   17   11
Accumulated Defined Benefit Plans Adjustment | Pension Plans | Location, Statement of Other Comprehensive Income, Balance [Axis]: us-gaap:OtherComprehensiveIncomeLossNetOfTax          
Accumulated Other Comprehensive Income Loss [Line Items]          
Other comprehensive income (loss) before reclassifications [1]         30
Accumulated Defined Benefit Plans Adjustment | Other Post-Retirement Benefit Plans          
Accumulated Other Comprehensive Income Loss [Line Items]          
Balance [1]     37 37 37
Other comprehensive income (loss) before reclassifications [1]         (2)
Amounts reclassified from Accumulated other comprehensive loss [1]     (1)   2
Other comprehensive (loss) income [1]     (1)   0
Balance [1] 36   36   37
Accumulated Defined Benefit Plans Adjustment | Other Post-Retirement Benefit Plans | Location, Statement of Other Comprehensive Income, Balance [Axis]: us-gaap:OtherComprehensiveIncomeLossNetOfTax          
Accumulated Other Comprehensive Income Loss [Line Items]          
Other comprehensive income (loss) before reclassifications [1]         (2)
Foreign Currency Items          
Accumulated Other Comprehensive Income Loss [Line Items]          
Balance     (50) (106) (106)
Other comprehensive income (loss) before reclassifications     (33)   56
Other comprehensive (loss) income     (33)   56
Balance (83)   (83)   (50)
Foreign Currency Items | Foreign Currency Items          
Accumulated Other Comprehensive Income Loss [Line Items]          
Other comprehensive income (loss) before reclassifications     (33)   56
Accumulated Other Comprehensive Income (Loss)          
Accumulated Other Comprehensive Income Loss [Line Items]          
Balance (24) (101) 7 (114) (114)
Balance $ (41) $ (9) $ (41) $ (9) $ 7
[1] The projected benefit obligation is actuarially determined on an annual basis as of December 31.