Fair Value Measurements Debt Instrument Fair Value (Details)	Mar. 31, 2017 USD ($)		Mar. 23, 2017 EUR (€)	Mar. 14, 2017 USD ($)	Sep. 22, 2016 EUR (€)	Aug. 26, 2016 USD ($)	Aug. 17, 2016 USD ($)	Jul. 01, 2016 USD ($)		May 12, 2016 USD ($)	Apr. 29, 2016 EUR (€)	Apr. 29, 2016 USD ($)	Apr. 13, 2016 USD ($)
Debt Instrument [Line Items]
Long Term debt, including current portion	$ 13,088,000,000							$ 16,994,000,000
Debt Instrument, Face Amount	13,301,000,000							17,526,000,000
Secured Notes [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	1,833,000,000							1,828,000,000
Debt Instrument, Face Amount	1,875,000,000							1,875,000,000					$ 1,875,000,000
Secured Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	2,059,000,000							2,044,000,000
Unsecured Notes [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	3,241,000,000							3,229,000,000
Debt Instrument, Face Amount	3,350,000,000							3,350,000,000					$ 3,350,000,000
Unsecured Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	3,951,000,000							3,575,000,000
Term Loan A [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	4,071,000,000							4,061,000,000
Debt Instrument, Face Amount	4,125,000,000							4,125,000,000				$ 4,125,000,000
Term Loan A [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	4,140,000,000							4,161,000,000
U.S. Term Loan B [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	0							3,546,000,000
Debt Instrument, Face Amount	0							3,750,000,000				$ 3,750,000,000
U.S. Term Loan B [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	0							3,773,000,000
U.S. Term Loan B-1 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount							$ 3,000,000,000
U.S. Term Loan B-2 [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	2,976,000,000
Debt Instrument, Face Amount	2,978,000,000			$ 2,985,000,000				0
U.S. Term Loan B-2 [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	2,998,000,000							0
Euro Term Loan B [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	0							960,000,000
Debt Instrument, Face Amount	0							987,000,000	[1]		€ 885,000,000
Euro Term Loan B [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	0							981,000,000	[1]
Euro Term Loan B-1 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount | €					€ 885,000,000
Euro Term Loan B-2 [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	937,000,000
Debt Instrument, Face Amount	938,000,000	[1]	€ 881,000,000					0
Euro Term Loan B-2 [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	942,000,000	[1]						0
Bridge Loan [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	0							2,995,000,000
Debt Instrument, Face Amount	0							3,000,000,000		$ 3,000,000,000
Bridge Loan [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	0							3,000,000,000
Convertible Senior Notes Due Two Thousand Seventeen [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	0							124,000,000
Debt Instrument, Face Amount								128,777,000
Convertible Senior Notes Due Two Thousand Seventeen [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	0							125,000,000
Convertible Senior Notes Due Two Thousand Twenty Member [Member]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount	30,000,000							251,000,000
Debt Instrument, Face Amount						$ 34,979,000.000		310,466,000
Convertible Senior Notes Due Two Thousand Twenty Member [Member] | Fair Value, Inputs, Level 2 [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value	33,000,000							264,000,000
Debt, Cost [Member]
Debt Instrument [Line Items]
Long Term debt, including current portion	13,088,000,000							16,994,000,000
Long-term Debt, Fair Value	$ 14,123,000,000							$ 17,923,000,000

[1] Euro Term Loan B and Euro Term Loan B-2 outstanding principal amounts as of March 31, 2017 and July 1, 2016 were based upon the Euro to U.S. dollar exchange rate as of those respective dates.