The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

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The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

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

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The percentage of an expected dividend used to calculate the fair value of share options granted.

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The weighted average fair value at the measurement date of granted equity instruments other than share options. [Refer: Weighted average [member]]

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The weighted average remaining contractual life of outstanding share options. [Refer: Weighted average [member]]

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The weighted average share price. [Refer: Weighted average [member]]

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The percentage of correlation between peer group index and the entity's share price used to calculate the fair value of share options granted.

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The percentage of peer group index dividend yield used to calculate the fair value of share options granted.

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The amount of peer group index price used to calculate the fair value of share options granted.

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The percentage of peer group index volatility used to calculate the fair value of share options granted.

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Share-Based Payments - Fair Value and Parameters for Cash-Settled Plans (Details)	12 Months Ended
	Dec. 31, 2018 EUR (€)	Dec. 31, 2017 EUR (€)	Dec. 31, 2018 USD ($) Y	Dec. 31, 2018 EUR (€) Y	Dec. 31, 2017 USD ($) Y	Dec. 31, 2017 EUR (€) Y
LTI Plan 2016
SHARE-BASED PAYMENTS
Weighted average fair value				€ 65.89		€ 84.16
Weighted average share price	€ 86.93	€ 93.45
Expected dividend yield	1.63%	1.38%
Weighted average remaining life of awards outstanding (in years) \| Y			2.4	2.4	2.9	2.9
Peer Group Index price \| $			$ 277.92		$ 247.24
Peer Group expected dividend yield			1.30%	1.30%	1.16%	1.16%
LTI Plan 2015
SHARE-BASED PAYMENTS
Weighted average fair value				€ 86.93		€ 92.40
Weighted average share price	€ 86.93	€ 93.45
Risk-free interest rate (depending on maturity)		(0.81%)
Expected dividend yield		1.38%
Weighted average remaining life of awards outstanding (in years) \| Y			0.1	0.1	0.8	0.8
SOP
SHARE-BASED PAYMENTS
Weighted average fair value				€ 20.67		€ 26.45
Weighted average share price	€ 86.93	€ 93.45
Expected dividend yield	1.63%	1.38%
Weighted average remaining life of awards outstanding (in years) \| Y			1.2	1.2	1.6	1.6
RSU
SHARE-BASED PAYMENTS
Weighted average fair value				€ 85.24		€ 92.08
Weighted average share price	€ 86.93	€ 93.45
Expected dividend yield	1.63%	1.38%
Weighted average remaining life of awards outstanding (in years) \| Y			1.0	1.0	1.1	1.1
Lowest \| LTI Plan 2016
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)	(0.70%)	(0.63%)
Expected volatility	17.90%	17.50%
Peer Group expected volatility			19.00%	19.00%	16.00%	16.00%
Expected correlation of the SAP share price and index price			36.00%	36.00%	41.00%	41.00%
Lowest \| SOP
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)	(0.67%)	(0.62%)
Expected volatility	22.80%	21.10%
Lowest \| RSU
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)	(0.69%)	(0.70%)
Highest \| LTI Plan 2016
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)	(0.55%)	(0.48%)
Expected volatility	21.40%	19.60%
Peer Group expected volatility			24.00%	24.00%	17.00%	17.00%
Expected correlation of the SAP share price and index price			42.00%	42.00%	48.00%	48.00%
Highest \| SOP
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)	(0.25%)	(0.41%)
Expected volatility	38.50%	34.50%
Highest \| RSU
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)	(0.31%)	(0.32%)