Stock Plans (Restricted Shares Outstanding) (Details) - 2021 Incentive Plan [Member] $ / shares in Units, shares in Thousands, $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($) $ / shares shares
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at beginning of period (in shares) | shares	2,483
Restricted stock granted (in shares) | shares	1,078
Restricted stock vested (in shares) | shares	(862)
Restricted stock forfeited (in shares) | shares	(140)
Balance at end of period (in shares) | shares	2,559
Balance at beginning of period (in dollars per shares) | $ / shares	$ 28.67
Restricted stock granted (in dollars per shares) | $ / shares	25.86
Restricted stock vested (in dollars per shares) | $ / shares	25.73
Restricted stock forfeited (in dollars per shares) | $ / shares	25.86
Balance at end of period (in dollars per shares) | $ / shares	$ 25.83
Balance at beginning of period | $	$ 72
Restricted stock granted | $	25
Restricted stock vested | $	(20)
Restricted stock forfeited | $
Balance at end of period | $	$ 60
Performance Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance at beginning of period (in shares) | shares	3,144
Restricted stock granted (in shares) | shares	388
Restricted stock forfeited (in shares) | shares	(47)
Balance at end of period (in shares) | shares	3,485
Balance at beginning of period (in dollars per shares) | $ / shares	$ 25.62
Restricted stock granted (in dollars per shares) | $ / shares	25.66
Restricted stock forfeited (in dollars per shares) | $ / shares	25.62
Balance at end of period (in dollars per shares) | $ / shares	$ 25.62