Share-Based Payments - Fair Value and Parameters for Cash-Settled Plans (Details) € / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2020 EUR (€) € / shares	Dec. 31, 2019 EUR (€) € / shares	Dec. 31, 2020 USD ($)
LTI Plan 2016
SHARE-BASED PAYMENTS
Weighted average fair value \| €	€ 72.94	€ 94.06
Weighted average share price \| € / shares	€ 107.22	€ 120.32
Expected dividend yield	1.54%	1.26%
Weighted average remaining life of awards outstanding	1 year 2 months 12 days	1 year 10 months 24 days
Peer Group Index price	481.65	363.63
Peer Group expected dividend yield	1.14%	1.17%	1.14%
LTI 2020
SHARE-BASED PAYMENTS
Weighted average fair value \| €	€ 94.75
Weighted average share price \| € / shares	€ 107.22
Expected volatility	30.00%
Weighted average remaining life of awards outstanding	3 years 2 months 12 days
NASDAQ-100 Total Return Index \| $			$ 15,072,290
Expected volatility of the NASDAQ-100 companies	36.00%		36.00%
Expected correlation of SAP and the NASDAQ-100 companies of ##%	31.00%		31.00%
SOP 2010
SHARE-BASED PAYMENTS
Weighted average fair value \| €		€ 49.51
Weighted average share price \| € / shares		€ 120.32
Expected dividend yield		1.26%
Weighted average remaining life of awards outstanding		3 months 18 days
RSU
SHARE-BASED PAYMENTS
Weighted average fair value \| €	€ 105.52	€ 118.72
Weighted average share price \| € / shares	€ 107.22	€ 120.32
Expected dividend yield	1.54%	1.26%
Weighted average remaining life of awards outstanding	1 year	1 year
Qualtrics Rights
SHARE-BASED PAYMENTS
Weighted average fair value \| €	€ 33.66	€ 37.55
Weighted average share price \| € / shares	€ 107.22	€ 120.32
Expected dividend yield	1.54%	1.26%
Weighted average remaining life of awards outstanding	1 year 6 months	1 year 8 months 12 days
Lowest \| LTI Plan 2016
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)	0.75%	0.68%
Expected volatility	34.00%	20.00%
Peer Group expected volatility	26.00%	18.00%	26.00%
Expected correlation of the SAP share price and index price	27.00%	38.00%	27.00%
Lowest \| SOP 2010
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)		0.25%
Expected volatility		27.00%
Lowest \| RSU
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)	0.77%	0.68%
Lowest \| Qualtrics Rights
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)	0.77%	0.55%
Highest \| LTI Plan 2016
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)	0.11%	0.57%
Expected volatility	42.00%	25.00%
Peer Group expected volatility	31.00%	22.00%	31.00%
Expected correlation of the SAP share price and index price	30.00%	40.00%	30.00%
Highest \| SOP 2010
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)		0.08%
Expected volatility		36.00%
Highest \| RSU
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)	0.32%	0.31%
Highest \| Qualtrics Rights
SHARE-BASED PAYMENTS
Risk-free interest rate (depending on maturity)	0.37%	0.35%

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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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 expected correlation between the entity and NASDAQ 100 companies.

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The percentage of expected volatility of NASDAQ 100 companies.

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Amount of total return index of the NASDAQ 100.

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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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