Financing (2020 Debt Issuances) (Narrative) (Details) - Senior notes € in Millions, $ in Millions	Oct. 06, 2020 USD ($)	Apr. 08, 2020 USD ($)	Apr. 08, 2020 EUR (€)	Mar. 30, 2020 USD ($)	Mar. 30, 2020 EUR (€)
Euronotes
Debt Instrument [Line Items]
Proceeds from issuance of debt		$ 816	€ 754	$ 1,900	€ 1,700
2.6% senior unsecured notes due 2050
Debt Instrument [Line Items]
Proceeds from issuance of debt	$ 980