Retirement Plans and Profit Sharing Arrangements - Pension Plan Assets Measured at Fair Value on a Recurring Basis (Details) - Pension Plans - USD ($) $ in Millions		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		$ 1,583	$ 905	$ 838
Level 1
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		205	300
Level 2
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		21	21
Level 3
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		41
U.S. large cap stocks | Total, Level 1, 2 and 3
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets			119
U.S. large cap stocks | Level 1
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets			119
U.S. small cap stocks | Total, Level 1, 2 and 3
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		102	80
U.S. small cap stocks | Level 1
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		102	80
Non-U.S. large cap stocks | Total, Level 1, 2 and 3
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		41	36
Non-U.S. large cap stocks | Level 1
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		41	36
U.S. investment grade bonds | Total, Level 1, 2 and 3
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		66	68
U.S. investment grade bonds | Level 1
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		45	47
U.S. investment grade bonds | Level 2
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		21	21
Non-U.S. investment grade bonds | Total, Level 1, 2 and 3
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		17	18
Non-U.S. investment grade bonds | Level 1
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		17	18
Insurance contracts | Total, Level 1, 2 and 3
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		41
Insurance contracts | Level 3
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		41
Insurance contracts | Level 3 | Non-U.S. plans
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets		41
Cash equivalents | NAV
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets	[1]	20	25
Collective investment funds | NAV
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets	[1]	984	289
Real estate investment trusts | NAV
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets	[1]	24	20
Hedge funds | NAV
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets	[1]	62	32
Pooled pension funds at NAV | NAV
Pension plan assets measured at fair value on a recurring basis:
Fair value of plan assets	[1]	$ 226	$ 218

[1] Amounts are comprised of certain investments that are measured at fair value using the NAV per share (or its equivalent) as a practical expedient and have not been classified in the fair value hierarchy.