Commitments and Contingencies (Narrative) (Details) $ in Millions, € in Billions |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 20, 2019
USD ($)
|
Mar. 20, 2019
EUR (€)
|
Jun. 27, 2017
USD ($)
|
Jun. 27, 2017
EUR (€)
|
Mar. 31, 2019
USD ($)
|
Jun. 30, 2018
USD ($)
|
Jun. 30, 2018
EUR (€)
|
Jun. 30, 2017
USD ($)
|
Dec. 31, 2019
USD ($)
|
Dec. 31, 2018
USD ($)
|
Dec. 31, 2017
USD ($)
|
|
| Commitments and Contingencies Disclosure [Line Items] | |||||||||||
| Other non-cancelable contractual obligations | $ 5,700 | ||||||||||
| European Commission fines | $ 1,697 | $ 5,071 | $ 2,736 | ||||||||
| Unfavorable Regulatory Action | |||||||||||
| Commitments and Contingencies Disclosure [Line Items] | |||||||||||
| European Commission fines | $ 1,700 | € 1.5 | $ 2,700 | € 2.4 | $ 1,700 | $ 5,100 | € 4.3 | $ 2,700 | |||