Equity Method Investments (Equity Method Investments Table) (Details) - Reportable Subsegments [Member] - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Graphic Packaging LLC [Member] | |||
| Schedule of Equity Method Investments [Line Items] | |||
| Current assets | $ 1,796 | $ 1,757 | |
| Noncurrent assets | 5,482 | 5,292 | |
| Current liabilities | 1,178 | 1,148 | |
| Noncurrent liabilities | 3,244 | 3,156 | |
| Net sales | 6,160 | 6,023 | |
| Gross profit | 1,093 | 946 | |
| Income from continuing operations | 333 | 336 | |
| Net income | 334 | 337 | |
| Ilim Holding [Member] | |||
| Schedule of Equity Method Investments [Line Items] | |||
| Current assets | 804 | 981 | |
| Noncurrent assets | 2,813 | 1,710 | |
| Current liabilities | 1,015 | 545 | |
| Noncurrent liabilities | 1,844 | 1,470 | |
| Noncontrolling interests | 16 | 11 | |
| Net sales | 2,189 | 2,713 | $ 2,150 |
| Gross profit | 1,025 | 1,549 | 1,047 |
| Income from continuing operations | 438 | 592 | 379 |
| Net income | $ 424 | $ 571 | $ 362 |