Defined contribution plan	12 Months Ended
	Dec. 31, 2021
Retirement Benefits [Abstract]
Defined contribution plan	Defined contribution planThe Company has defined contribution plans to which certain employees of the Company and participating subsidiaries may defer compensation for income tax purposes. Participants are eligible to receive matching contributions based on their contributions, in addition to other Company contributions. Defined contribution plan expenses were $279 million, $231 million and $220 million for the years ended December 31, 2021, 2020 and 2019, respectively.