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Changes in Accumulated Other Comprehensive Loss - Schedule of Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated comprehensive loss at beginning of the year	$ 7,563
Other comprehensive income (loss) before reclassifications	271	$ (43)
Amounts reclassified from accumulated other comprehensive loss	3	(36)
Net current-period other comprehensive income (loss)	274	(79)
Ending balance	10,092
Changes related to cash flow derivative hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated comprehensive loss at beginning of the year	(823)	(666)
Other comprehensive income (loss) before reclassifications	303	(46)
Amounts reclassified from accumulated other comprehensive loss	1	(36)
Net current-period other comprehensive income (loss)	304	(82)
Ending balance	(519)	(748)
Changes in defined benefit plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated comprehensive loss at beginning of the year	10	(2)
Other comprehensive income (loss) before reclassifications	(2)	3
Amounts reclassified from accumulated other comprehensive loss	0	0
Net current-period other comprehensive income (loss)	(2)	3
Ending balance	8	1
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated comprehensive loss at beginning of the year	11	(6)
Other comprehensive income (loss) before reclassifications	(30)	0
Amounts reclassified from accumulated other comprehensive loss	2	0
Net current-period other comprehensive income (loss)	(28)	0
Ending balance	(17)	(6)
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated comprehensive loss at beginning of the year	(802)	(674)
Ending balance	$ (528)	$ (753)

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