Equity Method Investments - Impact of Change in Accounting Principle on Consolidated Financial Statements (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Statements of Earnings
Provision for income taxes	$ (189)	$ (337)
Equity method investment net earnings	113	232
Net earnings	920	1,052
Net earnings attributable to Mondelēz International	$ 914	$ 1,046
Earnings per share attributable to Mondelēz International:
Basic EPS (in dollars per share)	$ 0.63	$ 0.70
Diluted EPS (in dollars per share)	$ 0.63	$ 0.70
Statements of Other Comprehensive Earnings
Currency translation adjustment	$ 190	$ 210
Total other comprehensive earnings/(losses)	131	158
Comprehensive earnings/(losses) attributable to Mondelēz International	$ 1,046	1,189
Change in Accounting Method Accounted of Earnings in Equity Method Investments [Member] \| As Reported
Statements of Earnings
Provision for income taxes		(307)
Equity method investment net earnings		94
Net earnings		944
Net earnings attributable to Mondelēz International		$ 938
Earnings per share attributable to Mondelēz International:
Basic EPS (in dollars per share)		$ 0.63
Diluted EPS (in dollars per share)		$ 0.62
Statements of Other Comprehensive Earnings
Currency translation adjustment		$ 207
Total other comprehensive earnings/(losses)		155
Comprehensive earnings/(losses) attributable to Mondelēz International		$ 1,078

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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