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Equity - Cash Flow Disclosures (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Entity Information [Line Items] |  |  |
Net cash flow provided by operating activities | € 11,763 | € 10,268 | € 13,196
Net cash flow used in investing activities | (5,327) | 5,896 | (7,790)
Net cash flow used in financing activities | (7,925) | (12,990) | (5,438)
Net increase (decrease) in cash and cash equivalents during the year | (1,335) | 2,976 | (438)
Telefónica Brazil |  |  |
Entity Information [Line Items] |  |  |
Net cash flow provided by operating activities | 3,678 | 2,949 | 3,517
Net cash flow used in investing activities | (2,741) | (1,295) | (1,238)
Net cash flow used in financing activities | (1,674) | (1,467) | (1,817)
Net increase (decrease) in cash and cash equivalents during the year | (737) | 187 | 462
Telefónica Germany |  |  |
Entity Information [Line Items] |  |  |
Net cash flow provided by operating activities | 2,732 | 2,407 | 2,386
Net cash flow used in investing activities | (1,608) | (875) | (459)
Net cash flow used in financing activities | (1,339) | (1,820) | (1,342)
Net increase (decrease) in cash and cash equivalents during the year | (215) | (288) | 585
Colombia Telecomunicaciones S.A. E.S.P. |  |  |
Entity Information [Line Items] |  |  |
Net cash flow provided by operating activities | 180 | 344 | 276
Net cash flow used in investing activities | 30 | (153) | (189)
Net cash flow used in financing activities | (225) | (218) | (42)
Net increase (decrease) in cash and cash equivalents during the year | (15) | (27) | 45
Telxius Telecom, S.A. |  |  |
Entity Information [Line Items] |  |  |
Net cash flow provided by operating activities | 152 | (627) | 528
Net cash flow used in investing activities | (63) | 6,874 | (1,141)
Net cash flow used in financing activities | (89) | (6,164) | 575
Net increase (decrease) in cash and cash equivalents during the year | € 0 | € 83 | € (38)

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