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Fair Value Measurements - Long-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2021	Nov. 16, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, interest rate, stated percentage	5.375%
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair values of long-term debt	$ 2,173		$ 2,127
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair values of long-term debt	$ 2,264		2,276
Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, interest rate, stated percentage	5.375%
Senior Notes | 5.375% Notes due 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, interest rate, stated percentage	5.375%
Senior Notes | 5.375% Notes due 2022 | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair values of long-term debt	$ 0		697
Senior Notes | 5.375% Notes due 2022 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair values of long-term debt	$ 0		742
Senior Notes | 4.375% Notes due 2028
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, interest rate, stated percentage	4.375%
Senior Notes | 4.375% Notes due 2028 | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair values of long-term debt	$ 791		789
Senior Notes | 4.375% Notes due 2028 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair values of long-term debt	$ 829		843
Senior Notes | 3.875% Notes due 2030
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, interest rate, stated percentage	3.875%
Senior Notes | 3.875% Notes due 2030 | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair values of long-term debt	$ 642		641
Senior Notes | 3.875% Notes due 2030 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair values of long-term debt	$ 675		691
Senior Notes | 3.875% Notes due 2032
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, interest rate, stated percentage	3.875%	5.375%
Senior Notes | 3.875% Notes due 2032 | Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair values of long-term debt	$ 740		0
Senior Notes | 3.875% Notes due 2032 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair values of long-term debt	$ 760		$ 0

X

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 55
-Paragraph 69C
-URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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