Subsequent Events (Details) (USD $)	60 Months Ended	12 Months Ended
	Feb. 27, 2020	Dec. 31, 2015	Feb. 27, 2015
Subsequent Event [Line Items]
Payments to Acquire Business, Other			$ 2,500,000,000
Line of Credit Facility, Expiration Date	Feb. 27, 2020
Line of Credit Facility, Description	At our option, subject to certain conditions, any loan under the Credit Agreement will bear interest at a rate equal to, either (i) the LIBOR Rate or (ii) the Base Rate (defined as the highest of (a) the Federal Funds rate plus 0.50%, (b) Citibank, N.A.’s “prime rate” as announced from time to time, or (c) one-month LIBOR plus 1.00%), plus, in each case the Applicable Margin, as defined in the Credit Agreement
line of credit available increase to credit facility			1,000,000,000
Subsequent Event | Minimum
Subsequent Event [Line Items]
Expected cost of restructuring		130,000,000
Restructuring and Related Cost, Expected Cost, to be Settled with Cash		120,000,000
Subsequent Event | Maximum
Subsequent Event [Line Items]
Expected cost of restructuring		150,000,000
Restructuring and Related Cost, Expected Cost, to be Settled with Cash		$ 140,000,000