Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 13,227	$ 12,309	$ 11,991
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Other comprehensive income (loss)	(202)	205	(336)
Ending balance	14,408	13,227	12,309
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax	(17)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent	(150)	144	(228)
Foreign currency translation adjustments:
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before Tax, beginning balance	(109)	(256)	(22)
AOCI Tax, beginning balance	5	8	2
Beginning balance	(104)	(248)	(20)
Other Comprehensive Income (Loss), before Tax [Abstract]
Other Comprehensive Income (Loss), before Tax	(152)	147	(234)
Other Comprehensive Income (Loss), Tax [Abstract]
Other Comprehensive Income (Loss), Tax	2	(3)	6
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Other comprehensive income (loss)		144	(228)
AOCI before Tax, ending balance	(261)	(109)	(256)
AOCI Tax, ending balance	7	5	8
Ending balance	(254)	(104)	(248)
Unrealized gains (losses) on cash flow hedges:
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before Tax, beginning balance	13	(68)	71
AOCI Tax, beginning balance	(3)	17	(14)
Beginning balance	10	(51)	57
Other Comprehensive Income (Loss), before Tax [Abstract]
OCI, before Reclassifications, before Tax	(35)	55	(153)
Other Comprehensive Income (Loss), before Tax	(47)	81	(139)
Other Comprehensive Income (Loss), Tax [Abstract]
Other Comprehensive Income (Loss) before Reclassifications, Tax	9	(14)	34
Other Comprehensive Income (Loss), Tax	12	(20)	31
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
OCI, before Reclassifications, Net of Tax	(26)	41	(119)
Other comprehensive income (loss)	(35)	61	(108)
AOCI before Tax, ending balance	(34)	13	(68)
AOCI Tax, ending balance	9	(3)	17
Ending balance	(25)	10	(51)
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before Tax, beginning balance	(96)	(324)	49
AOCI Tax, beginning balance	2	25	(12)
Beginning balance	(94)	(299)	37
Other Comprehensive Income (Loss), before Tax [Abstract]
Other Comprehensive Income (Loss), before Tax	(219)	228	(373)
Other Comprehensive Income (Loss), Tax [Abstract]
Other Comprehensive Income (Loss), Tax	17	(23)	37
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Other comprehensive income (loss)	(202)	205	(336)
AOCI before Tax, ending balance	(315)	(96)	(324)
AOCI Tax, ending balance	19	2	25
Ending balance	(296)	(94)	(299)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
AOCI before Tax, beginning balance	0
AOCI Tax, beginning balance	0
Beginning balance	0
Other Comprehensive Income (Loss), before Tax [Abstract]
Other Comprehensive Income (Loss), before Tax	(20)
Other Comprehensive Income (Loss), Tax [Abstract]
Other Comprehensive Income (Loss), Tax	3
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
AOCI before Tax, ending balance	(20)	0
AOCI Tax, ending balance	3	0
Ending balance	(17)	0
Cost of revenues | Unrealized gains (losses) on cash flow hedges:
Other Comprehensive Income (Loss), before Tax [Abstract]
Reclassification from AOCI, Current Period, before Tax	(11)	23	13
Other Comprehensive Income (Loss), Tax [Abstract]
Reclassification from AOCI, Current Period, Tax	3	(5)	(3)
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Reclassification from AOCI, Current Period, Net of Tax	(8)	18	10
SG&A expenses | Unrealized gains (losses) on cash flow hedges:
Other Comprehensive Income (Loss), before Tax [Abstract]
Reclassification from AOCI, Current Period, before Tax	(1)	3	1
Other Comprehensive Income (Loss), Tax [Abstract]
Reclassification from AOCI, Current Period, Tax	0	(1)	0
Other Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Reclassification from AOCI, Current Period, Net of Tax	$ (1)	$ 2	$ 1