Financial Risk Factors and Risk Management - Details on Hedging Instruments in Interest Rate Hedges (Details) € in Millions	12 Months Ended
	Dec. 31, 2022 EUR (€)
Interest Rate Swaps for EUR | 2027
FINANCIAL RISK FACTORS
Notional amount	€ 1,000
Average variable interest rate	3.949%
Interest Rate Swaps for EUR | 2028
FINANCIAL RISK FACTORS
Notional amount	€ 1,000
Average variable interest rate	3.373%
Interest Rate Swaps for EUR | 2029
FINANCIAL RISK FACTORS
Notional amount	€ 800
Average variable interest rate	2.713%
Interest Rate Swaps for EUR | 2030
FINANCIAL RISK FACTORS
Notional amount	€ 500
Average variable interest rate	3.348%
Interest Rate Swaps for EUR | 2031
FINANCIAL RISK FACTORS
Notional amount	€ 1,250
Average variable interest rate	3.511%
Interest Rate Swaps for USD | 2024
FINANCIAL RISK FACTORS
Notional amount	€ 94
Average variable interest rate	5.15%