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Debt (Details) - USD ($) |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 28, 2018 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Oct. 01, 2018
Debt Instrument [Line Items] |  |  |  |  |  |
Loss on debt extinguishment |  | $ 15,900,000 | $ 0 | $ 15,900,000 | $ 0 |
Payment of senior notes |  |  |  | $ 500,000,000 | $ 0 |
Redemption price percentage |  |  |  | 100.00% |  |
Senior Notes | Senior Notes Due 2023 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face value of debt | $ 700,000,000 |  |  |  |  |
Interest rate on senior notes | 3.65% |  |  |  |  |
Senior Notes | Senior Notes Due 2028 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face value of debt | $ 800,000,000 |  |  |  |  |
Interest rate on senior notes | 4.20% |  |  |  |  |
Senior Notes | Senior Notes Due 2019 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face value of debt | $ 0 |  |  |  |  |
Interest rate on senior notes | 6.25% |  |  |  |  |
Loss on debt extinguishment | $ 15,900,000 |  |  |  |  |
Payment of senior notes | $ 500,000,000 |  |  |  |  |
Senior Notes | Senior Notes Due 2018 | Subsequent Event |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Face value of debt |  |  |  |  |  | $ 800,000,000.0
Interest rate on senior notes |  |  |  |  |  | 2.05%

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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=6877327&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://www.xbrl.org/2003/role/presentationRef -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 Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629 + Details
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