Fair Value Measurements - Components of Change in Fair Value of Contingent Consideration (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 27, 2026 |
Jun. 28, 2025 |
Jun. 27, 2026 |
Jun. 28, 2025 |
|
| Fair Value Measurements [Abstract] | ||||
| Balance, beginning of period | $ 64 | $ 112 | $ 97 | $ 30 |
| Increase in contingent consideration due to business acquisitions and acquisitions of noncontrolling interests in subsidiaries | 0 | 1 | 0 | 94 |
| Decrease in contingent consideration due to payments | (4) | (7) | (4) | (19) |
| Change in fair value of contingent consideration in connection with business acquisitions | (2) | 0 | (1) | (2) |
| Change in fair value of contingent consideration in connection with changes in ownership in consolidated subsidiaries | 0 | 0 | (34) | 3 |
| Balance, end of period | $ 58 | $ 106 | $ 58 | $ 106 |