Reclassifications from Accumulated Other Comprehensive Income - Changes in the Accumulated Balance of Components of Other Comprehensive Earnings/(Losses) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period		$ 28,274	$ 28,216	$ 26,920	$ 28,323
Total other comprehensive earnings/(losses)		96	(224)	231	(29)
Less: other comprehensive (earnings)/loss attributable to noncontrolling interests		8	11	6	15
Other comprehensive earnings/(losses) attributable to Mondelēz International		104	(213)	237	(14)
Balance at end of period		28,679	27,553	28,679	27,553
Currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period		(9,659)	(9,043)	(9,808)	(9,097)
Currency translation adjustments		139	(339)	312	(333)
Tax (expense)/benefit		7	(60)	(15)	(16)
Total other comprehensive earnings/(losses)		146	(399)	297	(349)
Less: other comprehensive (earnings)/loss attributable to noncontrolling interests		8	11	6	15
Balance at end of period		(9,505)	(9,431)	(9,505)	(9,431)
Pension and Other Benefits Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period		(1,111)	(1,286)	(1,105)	(1,379)
Currency translation adjustments		(26)	72	(44)	104
Total other comprehensive earnings/(losses)		(22)	167	(28)	260
Net actuarial gain/(loss) arising during period		(1)	108	1	152
Tax (expense)/benefit before reclassifications		0	(27)	0	(27)
Tax expense/(benefit) on reclassifications	[1]	(3)	(6)	(6)	(12)
Balance at end of period		(1,133)	(1,119)	(1,133)	(1,119)
Amortization of experience losses and prior service costs
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Losses/(gains) reclassified into net earnings	[2]	5	16	13	36
Settlement losses and other expenses
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Losses/(gains) reclassified into net earnings	[2]	3	4	8	7
Derivative Cash Flow Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period		(44)	(96)	(34)	(148)
Currency translation adjustments		0	5	1	7
Total other comprehensive earnings/(losses)		(28)	8	(38)	60
Net actuarial gain/(loss) arising during period		(38)	98	(66)	124
Tax (expense)/benefit before reclassifications		4	1	1	0
Tax expense/(benefit) on reclassifications	[1]	1	0	3	(23)
Balance at end of period		(72)	(88)	(72)	(88)
Derivative Cash Flow Hedges | Interest rate contracts
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Losses/(gains) reclassified into net earnings	[3]	5	(99)	23	(53)
Derivative Cash Flow Hedges | Currency exchange contracts
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Losses/(gains) reclassified into net earnings	[3]	0	3	0	5
Accumulated other comprehensive income attributable to Mondelēz International
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period		(10,814)	(10,425)	(10,947)	(10,624)
Total other comprehensive earnings/(losses)		104	(213)	237	(14)
Balance at end of period		$ (10,710)	$ (10,638)	$ (10,710)	$ (10,638)

[1] Taxes reclassified to earnings are recorded within the provision for income taxes.

[2] These reclassified losses are included in net periodic benefit costs disclosed in Note 10, Benefit Plans.

[3] These reclassified gains or losses are recorded within interest and other expense, net.