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Debt (Narrative) (Details) - USD ($) |  |  | 3 Months Ended | 6 Months Ended |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 14, 2021 | Sep. 17, 2019 | Dec. 31, 2021 | Dec. 31, 2021 | Jan. 01, 2021 | Jul. 02, 2021 | Jan. 13, 2021 | Dec. 08, 2020 | Jun. 18, 2020 | Jun. 10, 2020 | Sep. 18, 2019 | Feb. 20, 2019 | Feb. 03, 2017 | May 14, 2015 | Dec. 02, 2014 | May 28, 2014 | May 22, 2013
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of borrowings drawn |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Long-term Debt |  |  |  | $ 481,000,000 | $ 21,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Less: current portion of debt |  |  | (235,000,000) | (235,000,000) |  | $ (245,000,000) |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Excluding Current Maturities |  |  | 5,626,000,000 | 5,626,000,000 |  | 4,894,000,000 |  |  |  |  |  |  |  |  |  |  |
Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  | 5,895,000,000 | 5,895,000,000 |  | 5,173,000,000 |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  | (34,000,000) | (34,000,000) |  | (34,000,000) |  |  |  |  |  |  |  |  |  |  |
Debt, net of debt issuance costs |  |  | 5,861,000,000 | 5,861,000,000 |  | 5,139,000,000 |  |  |  |  |  |  |  |  |  |  |
Less: current portion of debt |  |  | (235,000,000) | (235,000,000) |  | (245,000,000) |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Excluding Current Maturities |  |  | 5,626,000,000 | 5,626,000,000 |  | 4,894,000,000 |  |  |  |  |  |  |  |  |  |  |
Senior Notes 4.25 Percent Due March 2022 [Member] | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | 220,000,000 | 220,000,000 |  | 220,000,000 |  |  |  |  |  |  |  |  |  |  |
Senior Notes 4.75 Percent Due June 2023 [Member] | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | 541,000,000 | 541,000,000 |  | 541,000,000 |  |  |  |  |  |  |  |  |  |  |
Senior Notes 4.875 Percent Due March 2024 [Member] | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | 499,000,000 | 499,000,000 |  | 499,000,000 |  |  |  |  |  |  |  |  |  |  |
Senior Notes 4.75 Percent Due January 2025 [Member] | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | 479,000,000 | 479,000,000 |  | 479,000,000 |  |  |  |  |  |  |  |  |  |  |
Senior Notes 4.875 percent Due June 2027 [Member] | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | 504,000,000 | 504,000,000 |  | 504,000,000 |  |  |  |  |  |  |  |  |  |  |
Senior note 5.75 percent due December 2034 [Member] | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | 489,000,000 | 489,000,000 |  | 489,000,000 |  |  |  |  |  |  |  |  |  |  |
Senior note 4.091 percent due June 2029 | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | 463,000,000 | 463,000,000 |  | 461,000,000 |  |  |  |  |  |  |  |  |  |  |
Senior note 5.75 percent due December 2034 [Member] | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | 500,000,000 | 500,000,000 |  | 499,000,000 |  |  |  |  |  |  |  |  |  |  |
Senior note 3.125 percent due July 2029 [Member] | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | 500,000,000 | 500,000,000 |  | 500,000,000 |  |  |  |  |  |  |  |  |  |  |
Senior Notes 3.375 Percent due July 2031 [Member] | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | 500,000,000 | 500,000,000 |  | 500,000,000 |  |  |  |  |  |  |  |  |  |  |
LIBOR based Term Loan Due September 2025 [Member] | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | 0 | 0 |  | $ 481,000,000 |  |  |  |  |  |  |  |  |  |  |
Term Loan A1 | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | 600,000,000 | 600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan A2 | Reported Value Measurement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes |  |  | $ 600,000,000 | $ 600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
2019 Revolving Credit Facility | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 1,750,000,000 |  |  |  |  |  | $ 1,725,000,000 |  |  |  |  |  |  |  |  |  |
Term Loan | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price |  | 1.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan | Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |
Amount of borrowings drawn |  | $ 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Repayment | 475,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes 4.25 Percent Due March 2022 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 750,000,000 |  |  |  |
Stated interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 4.25% |  |  |  |
Amount of debt repurchased |  |  |  |  |  |  |  |  |  |  | $ 9,000,000 |  |  |  |  |  |
Senior Notes | Senior Notes 4.75 Percent Due June 2023 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000
Stated interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.75%
Amount of debt repurchased |  |  |  |  |  |  |  |  |  |  | $ 5,000,000 |  |  |  |  |  |
Gain (loss) on repurchase of debt instrument |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes 4.875 Percent Due March 2024 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |
Stated interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 4.875% |  |  |  |
Senior Notes | Senior Notes 4.75 Percent Due January 2025 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000 |
Stated interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.75% |
Senior Notes | Senior Notes 4.875 percent Due June 2027 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 700,000,000 |  |  |
Stated interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.875% |  |  |
Senior Notes | Senior note 5.75 percent due December 2034 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000,000 |  |
Stated interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.75% |  |
Senior Notes | Senior note 4.091 percent due June 2029 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |  |  |  |
Stated interest rate (as a percent) |  |  |  |  |  |  |  |  | 4.091% |  |  |  |  |  |  |  |
Senior Notes | Senior note 5.75 percent due December 2034 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |  |  |
Stated interest rate (as a percent) |  |  |  |  |  |  |  |  |  | 4.125% |  |  |  |  |  |  |
Senior Notes | Senior note 3.125 percent due July 2029 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |  |  |  |  |
Stated interest rate (as a percent) |  |  |  |  |  |  |  | 3.125% |  |  |  |  |  |  |  |  |
Senior Notes | Senior Notes 3.375 Percent due July 2031 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |  |  |  |  |
Stated interest rate (as a percent) |  |  |  |  |  |  |  | 3.375% |  |  |  |  |  |  |  |  |
Term Loan A1 | Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | 600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan A2 | Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | 600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
October 2021 Term Loan | Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | 1,200,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
October 2021 Term Loan A2 | Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | 2019 Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.125% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Term Loan A1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.125% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum | Term Loan A2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | 2019 Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Term Loan A1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum | Term Loan A2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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- Definition Fair value amount of debt instrument that was repurchased. + References No definition available. + Details
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