Fair Value Measurements - Assets and Liabilities (Details) - Recurring basis - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Estimate of Fair Value, Fair Value Disclosure | Common stock
Assets:
Common stock	$ 30	$ 21
Estimate of Fair Value, Fair Value Disclosure | Foreign exchange contracts
Assets:
Foreign exchange derivative contracts	10	15
Liabilities:
Foreign exchange derivative contracts	19	5
Estimate of Fair Value, Fair Value Disclosure | Equity swap contracts
Liabilities:
Foreign exchange derivative contracts	1
Level 1 | Common stock
Assets:
Common stock	30	21
Level 1 | Foreign exchange contracts
Assets:
Foreign exchange derivative contracts	0	0
Liabilities:
Foreign exchange derivative contracts	0	0
Level 1 | Equity swap contracts
Liabilities:
Foreign exchange derivative contracts	1
Level 2 | Common stock
Assets:
Common stock	0	0
Level 2 | Foreign exchange contracts
Assets:
Foreign exchange derivative contracts	10	15
Liabilities:
Foreign exchange derivative contracts	19	5
Level 2 | Equity swap contracts
Liabilities:
Foreign exchange derivative contracts	0
Fair Value, Inputs, Level 3 | Foreign exchange contracts
Assets:
Foreign exchange derivative contracts	$ 0	$ 0