Long-Term Debt (Details) - Parent Company - Senior Notes $ in Millions	Apr. 25, 2022 USD ($)
Fixed Rate/Floating Rate Senior Notes Due April 2028 And 2033
Subsequent Event [Line Items]
Principal amount	$ 1,000
Fixed Rate/Floating Rate Senior Notes Due April 2028 And 2033 | One year prior to maturity date
Subsequent Event [Line Items]
Redemption period	1 year
Fixed Rate/Floating Rate 4.055 Percent Senior Notes Due April 2028
Subsequent Event [Line Items]
Principal amount	$ 400
Interest rate	4.055%
Fixed Rate/Floating Rate 4.055 Percent Senior Notes Due April 2028 | 30 days or 90 days prior to maturity date
Subsequent Event [Line Items]
Redemption period	30 days
Fixed Rate/Floating Rate 4.055 Percent Senior Notes Due April 2028 | SOFR
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)	1.355%
Fixed Rate/Floating Rate 4.055 Percent Senior Notes Due April 2028 | LIBOR
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)	1.239%
Fixed Rate/Floating Rate 4.337 Percent Senior Notes Due April 2033
Subsequent Event [Line Items]
Principal amount	$ 600
Interest rate	4.337%
Fixed Rate/Floating Rate 4.337 Percent Senior Notes Due April 2033 | 30 days or 90 days prior to maturity date
Subsequent Event [Line Items]
Redemption period	90 days
Fixed Rate/Floating Rate 4.337 Percent Senior Notes Due April 2033 | SOFR
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)	1.66%
Fixed Rate/Floating Rate 4.337 Percent Senior Notes Due April 2033 | LIBOR
Subsequent Event [Line Items]
Basis spread on variable rate (as a percent)	1.543%