Subsequent Event	12 Months Ended
	Dec. 31, 2021
Subsequent Events [Abstract]
Subsequent Event	Subsequent EventIn February 2022, we closed on the sale and leaseback of our Shelton, Connecticut office building and received net proceeds, after fees and expenses, of $51 million and will recognize a pre-tax gain of $14 million. Total base lease payments under the leaseback agreement will be approximately $41 million over the ten year lease term.