Equity - Reserves for Other Comprehensive Income (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Reserves within equity
Balance	€ 44,519	€ 37,493
Balance	55,230	44,519
Reserve for OCI on cash flow hedge derivatives
Reserves within equity
Balance	(896)	(5)
Changes of the year	(2,750)	(1,045)
Reversal to inventories adjustments	(6)	1
Reclassification adjustments	3,310	153
Balance	(342)	(896)
Reserve for OCI on cash flow hedge derivatives \| Gross reserve
Reserves within equity
Balance	(1,269)	(7)
Changes of the year	(3,883)	(1,479)
Reversal to inventories adjustments	(8)	2
Reclassification adjustments	4,677	215
Balance	(483)	(1,269)
Reserve for OCI on cash flow hedge derivatives \| Deferred tax liabilities, gross
Reserves within equity
Balance	373	2
Changes of the year	1,133	434
Reversal to inventories adjustments	2	(1)
Reclassification adjustments	(1,367)	(62)
Balance	141	373
Reserve for OCI on defined benefit plans
Reserves within equity
Balance	(117)	(158)
Changes of the year	55	42
Currency translation differences	1	(1)
Changes in scope of consolidation	3
Balance	(58)	(117)
OCI relating to equity-accounted investments	1	(4)
Reserve for OCI on defined benefit plans \| Gross reserve
Reserves within equity
Balance	(84)	(205)
Changes of the year	60	119
Currency translation differences	1	2
Changes in scope of consolidation	3
Balance	(20)	(84)
Reserve for OCI on defined benefit plans \| Deferred tax liabilities, gross
Reserves within equity
Balance	(33)	47
Changes of the year	(5)	(77)
Currency translation differences		(3)
Balance	(38)	(33)
Reserve for OCI on equity-accounted investments
Reserves within equity
Balance	54	85
Changes of the year	92	(32)
Currency translation differences		1
Changes in scope of consolidation	1
Reclassification adjustments	(101)
Balance	46	54
Reserve for OCI on Investments fair value
Reserves within equity
Balance	141	36
Changes of the year	56	105
Reclassification to retained earnings	(144)
Balance	€ 53	€ 141

The amount of increase (decrease) in reserves within equity resulting from the changes in scope of consolidation.

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The increase (decrease) in equity resulting from reclassification to retained earnings.

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Represents the reclassification adjustments in equity reserve for during the year.

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Represents the changes in equity during the period.

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Represents the equity reserve for financial assets.

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The amount of reversal to inventories adjustments.

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The amount of share of accumulated other comprehensive income of equity-accounted investments.

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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The amount of residual interest in the assets of the entity after deducting all its liabilities.

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