Accelerated share repurchase agreement amount.

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Accelerated share repurchase agreement shares.

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Expected term of the Notes issued. Debt issuance costs associated with these notes will be amortized over the expected term of these Notes.

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Long term debt maturities repayments of principal in year eight.

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Long Term Debt Maturities Repayments Of Principal In Year Eleven

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Long term debt maturities repayments of principal in year nine.

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Long term debt maturities repayments of principal in year seven.

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Long term debt maturities repayments of principal in year six.

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Long term debt maturities repayments of principal in year ten.

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- Definition

Repayments of Long Term Debt and Interest

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Stock repurchased and retired during period average price.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

The cash outflow to reacquire common stock during the period.

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- Definition

The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

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- Definition

Amount of stock repurchase plan authorized.

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No definition available.

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Amount remaining of a stock repurchase plan authorized.

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No definition available.

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- Definition

Number of shares that have been repurchased and retired during the period.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Recapitalization - Additional Information (Detail) - USD ($)				3 Months Ended	8 Months Ended
	Oct. 11, 2017	Aug. 03, 2017	Jul. 24, 2017	Sep. 10, 2017	Sep. 10, 2017	Sep. 11, 2016	Aug. 02, 2017	Jul. 27, 2017	May 25, 2016
Debt Instrument [Line Items]
Share repurchase program, authorized amount									$ 250,000,000
Stock repurchase program, remaining amount				$ 250,000,000	$ 250,000,000			$ 136,400,000
Accelerated share repurchase, agreement amount							$ 1,000,000,000
Payments for purchases of common stock					$ 1,012,721,000	$ 283,858,000
Common stock repurchased and retired (in shares)				4,558,863	4,639,223	2,714,322
ASR Agreement on August 2 2017 [Member]
Debt Instrument [Line Items]
Common stock repurchased and retired (in shares)				4,558,863
Counterparty [Member] \| ASR Agreement on August 2 2017 [Member]
Debt Instrument [Line Items]
Accelerated share repurchase, share amount		4,558,863
Class A-2-I Notes [Member]
Debt Instrument [Line Items]
Deferred financing costs, amortization period					5 years
Class A-2-II Notes [Member]
Debt Instrument [Line Items]
Deferred financing costs, amortization period					10 years
Subsequent Event [Member] \| ASR Agreement on August 2 2017 [Member]
Debt Instrument [Line Items]
Common stock repurchased and retired (in shares)	5,218,670
Common stock repurchased and retired during period, average price	$ 191.62
2017 Recapitalization [Member]
Debt Instrument [Line Items]
Debt instrument interest rate description			The interest rate on the Floating Rate Notes is payable at a rate equal to LIBOR plus 125 basis points.
Gross proceeds from the issuance of debt			$ 1,900,000,000
Debt issuance costs				$ 16,800,000	$ 16,800,000
Payments for purchases of common stock		$ 1,000,000,000
2017 Recapitalization [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Share repurchase program, authorized amount								$ 1,250,000,000
2017 Recapitalization [Member] \| Class A-2-I, Series 2017-1 Floating Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Debt instrument face amount			$ 300,000,000
Debt instrument, term			5 years
2017 Recapitalization [Member] \| Class A-2-I, Series 2017-1 Floating Rate Senior Secured Notes [Member] \| Libor Rate [Member]
Debt Instrument [Line Items]
Interest rate spread			1.25%
2017 Recapitalization [Member] \| Class A-2-II, Series 2017-1 3.082% Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Debt instrument face amount			$ 600,000,000
Debt instrument, term			5 years
Debt instrument, stated percentage			3.082%
2017 Recapitalization [Member] \| Class A-2-III, Series 2017-1 4.118% Fixed Rate Senior Secured Notes [Member]
Debt Instrument [Line Items]
Debt instrument face amount			$ 1,000,000,000
Debt instrument, term			10 years
Debt instrument, stated percentage			4.118%
2017 Recapitalization [Member] \| 2017 Notes [Member]
Debt Instrument [Line Items]
Scheduled principal payments in year 2017				4,800,000	4,800,000
Scheduled principal payments in year 2018				19,000,000	19,000,000
Scheduled principal payments in year 2019				19,000,000	19,000,000
Scheduled principal payments in year 2020				19,000,000	19,000,000
Scheduled principal payments in year 2021				19,000,000	19,000,000
Scheduled principal payments in year 2022				871,800,000	871,800,000
Scheduled principal payments in year 2023				10,000,000	10,000,000
Scheduled principal payments in year 2024				10,000,000	10,000,000
Scheduled principal payments in year 2025				10,000,000	10,000,000
Scheduled principal payments in year 2026				10,000,000	10,000,000
Scheduled principal payments in year 2027				907,500,000	907,500,000
2017 Recapitalization [Member] \| 2017 Variable Funding Notes [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Variable funding notes			$ 175,000,000
2012 Recapitalization [Member]
Debt Instrument [Line Items]
Repayment of principal and interest					910,500,000
Remaining unamortized debt issuance costs expensed by company				$ 5,500,000	$ 5,500,000