Segment, Geographic and Other Revenue Information - Long-Lived Assets By Geographic Region (Detail) - USD ($) $ in Millions |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|---|---|---|---|
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Property, plant and equipment, net | $ 13,967 | $ 13,385 | $ 13,865 |
| United States [Member] | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Property, plant and equipment, net | 7,606 | 7,089 | 6,971 |
| Developed Europe [Member] | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Property, plant and equipment, net | 4,304 | 4,204 | 4,345 |
| Developed Rest Of World [Member] | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Property, plant and equipment, net | 453 | 490 | 632 |
| Emerging Markets [Member] | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Property, plant and equipment, net | $ 1,603 | $ 1,602 | $ 1,917 |