Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesOur overall effective income tax rates were 24.3% and 24.2% for the three and nine months ended September 30, 2021 and 21.5% and 23.1% for the three and nine months ended September 30, 2020, respectively. The rates for the three and nine months ended September 30, 2021 resulted in income tax expense of $46.7 million and $131.5 million, respectively, compared to income tax expense of $27.1 million and $66.1 million for the three and nine months ended September 30, 2020, respectively. The year-over-year increase in our effective tax rate for the three and nine months ended September 30, 2021, is primarily due to a decrease in tax windfalls recognized upon the vesting and exercise of equity awards, which is partially offset by a year-over-year increase in home energy credits.